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Curated directory of the best startup tools
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startup_tools.md

Here are the best startup tools of 2019 that will help you build out your startup business as quickly, cheaply, and efficiently as possible.

This is a curated list of tools for everything from productivity to web hosting to development tools to designing. Most of these tools are either free or have limited free option that is enough for startups. We love all the free services out there, but it would be good to keep it on topic. It's a bit of a grey line at times so this is a bit opinionated; feel free to suggest and contribute in this list.

Source Code Repos

  • GitHub — Unlimited public repositories and unlimited private repositories (up to 3 collaborators).
  • GitLab — Unlimited public and private Git repos with unlimited collaborators.
  • BitBucket — Unlimited public and private repos (Git and Mercurial) for up to 5 users with Pipelines for CI/CD.
  • Visual Studio — Unlimited private repos (Git and TFS) for up to 5 users/team.

Major Cloud Providers' Always-Free Limits

  • Google Cloud Platform

    • App Engine - 28 frontend instance hours per day, 9 backend instance hours per day
    • Cloud Firestore - 1GB storage, 50,000 reads, 20,000 writes, 20,000 deletes per day
    • Compute Engine - 1 non-preemptible f1-micro, 30GB HDD, 5GB snapshot storage (restricted to certain regions)
    • Cloud Storage - 5GB, 1GB network egress
    • Cloud Pub/Sub - 10GB of messages per month
    • Cloud Functions - 2 million invocations per month (includes both background and HTTP invocations)
    • Google Kubernetes Engine - No cluster management fee for clusters of all sizes. Each user node is charged at standard Compute Engine pricing
    • BigQuery - 1 TB of querying per month, 10 GB of storage each month
    • Cloud Build - 120 build-minutes per day
    • Cloud Source Repositories - Up to 5 Users, 50 GB Storage, 50 GB Egress
    • Full, detailed list - https://cloud.google.com/free/docs/gcp-free-tier#always-free-usage-limits

  • Amazon Web Services

    • Amazon DynamoDB - 25GB NoSQL DB
    • Amazon Lambda - 1 Million requests per month
    • Amazon SNS - 1 million publishes per month
    • Amazon Cloudwatch - 10 custom metrics and 10 alarms
    • Amazon Glacier - 10GB long-term object storage
    • Amazon SQS - 1 million messaging queue requests
    • Amazon CodeBuild - 100min of build time per month
    • Amazon Code Commit - 5 active users per month
    • Amazon Code Pipeline - 1 active pipeline per month
    • Full, detailed list - https://aws.amazon.com/free/?awsf.Free%20Tier%20Types=categories%23alwaysfree

  • Microsoft Azure

    • App service - 10 web, mobile or API apps
    • Functions - 1 million requests per month
    • DevTest Labs - Enable fast, easy, and lean dev-test environments
    • Active Directory - 500,000 objects
    • Active Directory B2C - 50,000 monthly stored users
    • Azure DevOps - 5 active users
    • Microsoft IoT Hub - 8,000 messages per day
    • Load Balancer - 1 free public load balanced IP (VIP)
    • Notification Hubs - 1 million push notifications
    • Bandwidth - 5GB egress per month
    • Visual Studio Code
    • Full, detailed list - https://azure.microsoft.com/en-us/free/

Web Hosting

  • GitHub Pages — Hosting static site directly from GitHub repository.
  • Netlify — Builds, deploy and hosts static site or app, free for 100 GB data and 100 GB/month bandwidth.
  • Surge - Static web publishing for Front-End Developers, right from the CLI. Unlimited sites with custom domain support.
  • [Render] - Render is a unified platform to build and run all your apps and websites with free SSL, a global CDN, and auto deploys from GitHub.
  • ZEIT Now - Global serverless application deployments. Managed platform for Node.js, static sites and Docker deployments. Limited to 3 concurrent instances, 1 GB storage and 1 GB bandwidth for OSS projects (source files are exposed on a public URL).
  • Digital Ocean - Provides developers cloud services that help to deploy and scale applications.
  • OpenShift Container Platform - Red Hat's on-premises private platform as a service product, built around a core of application containers powered by Docker, with orchestration and management provided by Kubernetes, on a foundation of Red Hat Enterprise Linux.
  • Neocities — Static, 1 GB free storage with 200 GB Bandwidth.
  • SourceForge — Find, Create and Publish Open Source software for free.
  • Read The Docs — Free documentation hosting with versioning, PDF generation and more
  • Developer Portfolios — Turn GitHub projects, apps and websites into a personal developer portfolio
  • Sanity.io – The fully customisable headless CMS. Hosted backend for structured content with customizeable MIT licensed editor built with React. Unlimited projects. 3 users, 2 datasets, 500k API CDN requests, 5GB assets for free per project.
  • Contentful — Content as a Service. Content management and delivery APIs in the cloud. 3 users, 3 repositories and 100,000 API requests/month for free
  • Pantheon — Drupal and WordPress hosting, automated DevOps and scalable infrastructure. Free for developers and agencies.
  • Acquia — Hosting for Drupal sites. Free tier for developers. Free development tools (such as Acquia Dev Desktop) also available.
  • Bubble.is — Visual programming to build web and mobile apps without code, free 100 visitors/month, 2 apps.
  • Tilda — One site, 50 pages, 50 MB storage, only the main pre-defined blocks among 170+ available, no fonts, no favicon and no custom domain.
  • txti.es — Quickly create web pages with markdown.
  • opeNode — Free cloud hosting for open source projects.
  • kuber.host — Kubernetes hosting with free plan
  • Cloudnode — Free cloud hosting for Node.js apps.

Platform as a Service (PaaS)

  • Heroku — Host your apps in the cloud, free for single process apps.
  • EngineYard — Engine Yard provides 500 free hours.
  • Appharbor — A .NER PaaS that provides 1 free worker.
  • Firebase — Build real-time apps, the free plan has 100 max connections, 10 GB data transfer, 1 GB data storage, 1 GB hosting storage and 10 GB hosting transfer.
  • IBM Bluemix — IBM PaaS with a monthly free allowance.
  • outsystems.com — Enterprise web development PaaS for on-premise or cloud, free "personal environment" offering allows for unlimited code and up to 1 GB database
  • scn.sap.com — The in-memory Platform-as-a-Service offering from SAP. Free developer accounts come with 1 GB structured, 1 GB unstructured, 1 GB of Git data and allow you to run HTML5, Java and HANA XS apps
  • mendix.com — Rapid Application Development for Enterprises, unlimited number of free sandbox environments supporting 10 users, 100 MB of files and 100 MB database storage each
  • pythonanywhere.com — Cloud Python app hosting. Beginner account is free, 1 Python web application at your-username.pythonanywhere.com domain, 512 MB private file storage, one MySQL database
  • configure.it — Mobile app development platform, free for 2 projects, limited features but no resource limits
  • sandstorm.io — Sandstorm is an open source operating system for personal and private clouds. Free plan offers 200 MB storage and 5 grains free
  • gearhost.com — Platform for .NET and PHP apps. 256 MB of RAM for free on a shared server with limited resources
  • gigalixir.com - Gigalixir provide 1 free instance that never sleeps and free-tier PostgreSQL database limited to 2 connections, 10, 000 rows and no backups, for Elixir/Phoenix apps.

Backend as as Service (BaaS)

  • blockspring.com — Cloud functions. Free for 5 million runs/month
  • progress.com — Mobile backend, starter plan has unlimited requests/second, with 1 GB of data storage. Enterprise application support
  • backendless.com — Mobile and Web Baas, with 1 GB file storage free, push notifications 50000/month, and 1000 data objects in table.
  • hasura.io — Platform to build and deploy app backends fast, free for single node cluster.
  • pusher.com — Free, unlimited push notifications for 2000 monthly active users. A single API for iOS and Android devices.
  • layer.com — The full-stack building block for communications
  • quickblox.com — A communication backend for instant messaging, video and voice calling and push notifications
  • pushbots.com — Push notification service. Free for up to 1.5 million pushes/month
  • onesignal.com — Unlimited free push notifications
  • getstream.io — Build scalable news feeds and activity streams in a few hours instead of weeks, free for 3 million feed updates/month
  • tyk.io — API management with authentication, quotas, monitoring and analytics. Free cloud offering
  • iron.io — Async task processing (like AWS Lambda) with free tier and 1 month free trial
  • nstack.com — Async task processing (like AWS Lambda). 10 free private services and unlimited free public services
  • pubnub.com — Free push notifications for up to 1 million messages/month and 100 active daily devices
  • pushtechnology.com — Real-time Messaging for browsers, smartphones and everyone. 100 concurrent connections. Free 10 GB data/month
  • webtask.io — Run code with an HTTP call. No provisioning. No deployment
  • zapier.com — Connect the apps you use, to automate tasks. 5 zaps, every 15 minutes and 100 tasks/month
  • stackstorm.com — Event-driven automation for apps, services and workflows, free without flow, access control, LDAP,...
  • simperium.com — Move data everywhere instantly and automatically, multi-platform, unlimited sending and storage of structured data, max. 2,500 users/month
  • pushcrew.com — Push notification service. Unlimited notifications up to 2000 Subscribers
  • streamdata.io — Turns any REST API into an event-driven streaming API. Free plan up to 1 million messages and 10 concurrent connections
  • posthook.io — Job Scheduling Service. Allows you to schedule requests for specific times. 500 scheduled requests/month free.
  • paraio.com — Backend service API with flexible authentication, full-text search and caching. Free for 1 app, 1GB app data.

IaaS

  • backblaze.com — Backblaze B2 cloud storage. Free 10 GB (Amazon S3-like) object storage for unlimited time

Database as as Service (DBaaS)

  • Redis Labs — Redis as a Service, 30 MB and 30 concurrent connections free.
  • Heroku Postgres - SQL database
  • MongoDB Atlas — free tier gives 512 MB.
  • Airtable — Looks like a spreadsheet, but it's a relational database, unlimited bases, 1,200 rows/base and 1,000 API requests/month
  • Redsmin — Online real-time monitoring and administration service for Redis, 1 Redis instance free
  • graphstory.com — GraphStory offers Neo4j (a Graph Database) as a service
  • elephantsql.com — PostgreSQL as a service, 20 MB free
  • graphenedb.com — Neo4j as a service, up to 1,000 nodes and 10,000 relations free
  • scalingo.com — Primarily a PaaS but offers a 512 MB free tier of MySQL, PostgreSQL or MongoDB
  • skyvia.com — Cloud Data Platform, offers free tier and all plans are completely free while in beta
  • spreadsheetdb.io — Database that can be queried with spreadsheets, 3 spreadsheets and 200 rows free
  • FaunaDB — FaunaDB is a distributed, multi-model, ACID-compliant, and globally scalable database, free tier gives 5 GB
  • IBM Cloudant — Hosted database from IBM, 1 GB free

DNS

  • Cloudflare - Free DNS. Unlimited number of domains.
  • ClouDNS — Free DNS hosting up to 3 domains with unlimited records.
  • NameCheap — Free DNS. No limit on number of domains.
  • PorkBun - ICANN accredited domain name registrar.
  • Gandi.net - The 25th largest registrar in terms of the number of domains registered.
  • iwantmyname - No bullshit domain management service for those privacy conscious companies.
  • Freenom — Free domain provider. Get FQDN for free.
  • freedns.afraid.org — Free DNS hosting
  • dns.he.net — Free DNS hosting service with Dynamic DNS Support
  • luadns.com — Free DNS hosting, 3 domains, all features with reasonable limits
  • domain.yandex.com — Free email and DNS hosting for up to 1,000 users
  • selectel.com — Free DNS hosting, anycast, 10 geo zones
  • ns1.com — Data Driven DNS, automatic traffic management, 1 million free queries
  • zonewatcher.com — Automatic backups and DNS change monitoring. 1 domain free
  • dynu.com — Free dynamic DNS service
  • noip — a dynamic dns service that allows up to 3 hostnames free with confirmation every 30 days
  • duckdns.org — Free DDNS with up to 5 domains on the free tier. With configuration guides for various setups.
  • 1984.is — Free DNS service with API, and lots of other free DNS features included.

Security and PKI

  • letsencrypt.org — Free SSL Certificate Authority with certs trusted by all major browsers
  • ssllabs.com — Very deep analysis of the configuration of any SSL web server
  • auth0.com — Hosted free for development SSO. Up to 2 social identity providers for closed-source projects.
  • qualys.com — Find web app vulnerabilities, audit for OWASP Risks
  • duo.com — Two-factor authentication (2FA) for website or app. Free 10 users, all authentication methods, unlimited, integrations, hardware tokens
  • Have I been pwned? — REST API for fetching the information on the breaches.
  • Authy - Two-factor authentication (2FA) mobile and desktop app.
  • pyup.io — Monitory Python dependencies for security vulnerabilities and update them automatically. Free for one private project, unlimited projects for open source.
  • threatconnect.com — Threat intelligence: It is designed for individual researchers, analysts and organizations who are starting to learn about cyber threat intelligence. Free up to 3 Users
  • crypteron.com — Cloud-first, developer-friendly security platform prevents data breaches in .NET and Java applications
  • snyk.io — Snyk found and reported several vulnerabilities in the package.Limited to 1 private project (unlimited for open source projects)
  • globalsign.com — Free SSL certificates for Open Source
  • Okta — User management, authentication and authorization. Free for up to 1000 monthly active users.
  • ringcaptcha.com — Tools to use phone number as id, available for free
  • alienvault.com — Uncovers compromised systems in your network
  • tinfoilsecurity.com — Automated vulnerability scanning. Free plan allows weekly XSS scans
  • acunetix.com — Free vulnerability and network scanning for 3 targets
  • ponycheckup.com — An automated security checkup tool for Django websites
  • foxpass.com — Hosted LDAP and RADIUS. Easy per-user logins to servers, VPNs and wireless networks. Free for 10 users
  • opswat.com — Security Monitoring of computers, devices, applications, configurations,... Free 25 users and 30 days history
  • bitninja.io — Botnet protection through a blacklist, free plan only reports limited information on each attack
  • onelogin.com — Identity as a Service (IDaaS), Single Sign-On Identity Provider, Cloud SSO IdP, 3 company apps and 5 personal apps, unlimited users
  • logintc.com — Two-factor authentication (2FA) by push notifications, free for 10 users, VPN, Websites and SSH
  • report-uri.io — CSP and HPKP violation reporting
  • cloudsploit.com — Amazon Web Services (AWS) security and compliance auditing and monitoring
  • Internet.nl — Test for modern Internet Standards like IPv6, DNSSEC, HTTPS, DMARC, STARTTLS and DANE
  • Mozilla Observatory — Find and fix security vulnerabilities in your site.
  • Shieldfy — Web application firewall and vulnerability detection for developers, free plan up to 100k requests per month.

Code Review and Code Quality

  • GitHub Pull Request - GitHub git hosting and pioneer of the "Pull Request".
  • Gerrit - Open source git code review tool originating out of Google.
  • Crucible - Atlassian's on-premise code review tool.
  • Phabricator - Open source git/mercurial/svn code review tool originating out of Facebook.
  • Pull Reminders - Automated Slack reminders and metrics for GitHub pull requests.
  • Reviewable - Code review tool built on top of GitHub pull requests.
  • Upsource - JetBrain's on-premise git/mercurial/perforce/svn code review tool.
  • Codacy - Automated code reviews and monitors code quality over time, static analysis, code coverage and metrics.
  • tachikoma.io — Dependency Update for Ruby, Node.js, Perl projects, free for Open Source
  • landscape.io — Code Quality for Python projects, free for Open Source
  • houndci.com — Comments on GitHub commits about code quality, free for Open Source
  • Code Climate - Automated code review, free for Open Source and unlimited organisation-owned private repos (upto 4 collaboraters). Also free for students and institutions.
  • coveralls.io — Display test coverage reports, free for Open Source
  • scrutinizer-ci.com — Continuous inspection platform, free for Open Source
  • codecov.io — Code coverage tool (SaaS), free for Open Source and 1 free private repo
  • insight.sensiolabs.com — Code Quality for PHP/Symfony projects, free for Open Source
  • codacy.com — Automated code reviews for PHP, Python, Ruby, Java, JavaScript, Scala, CSS and CoffeeScript, free for unlimited public and private repositories
  • gocover.io — Code coverage for any Go package
  • goreportcard.com — Code Quality for Go projects, free for Open Source
  • scan.coverity.com — Static code analysis for Java, C/C++, C# and JavaScript, free for Open Source
  • webceo.com — SEO tools but with also code verifications and different type of advices
  • zoompf.com — Fix the performance of your web sites, detailed analysis
  • gtmetrix.com — Reports and thorough recommendations to optimize websites
  • browserling.com — Live interactive cross-browser testing, free only 3 minutes sessions with MS IE 9 under Vista at 1024 x 768 resolution
  • shields.io — Quality metadata badges for open source projects
  • beanstalkapp.com — A complete workflow to write, review and deploy code, free account for 1 user and 1 repository with 100 MB of storage
  • testanywhere.co — Automatic test website or web app continuously and catch bugs in the early stages, free 1,000 tests/month
  • blamewarrior.com — Tool to automatically assign reviewers for new pull requests and track statistics of review process, free for Open Source
  • gerrithub.io — Gerrit code review for GitHub repositories for free
  • reviewable.io — Code review for GitHub repositories, free for public or personal repos
  • sonarcloud.io — Automated source code analysis for Java, JavaScript, C/C++, C#, VB.NET, PHP, Objective-C, Swift, Python, Groovy and even more languages, free for Open Source
  • golangci.com — Automated Go (golang) code review service for GitHub pull requests.
  • Prettier - Opinionated code formatter.
  • JSLint - Linting and coding conventions. Usually available as plugin for IDEs/editors.

Site Performance Tools:

Web Scraping Tools

Code Editors and IDE

Online Development Platforms

  • Codenvy — IDE and automated developer workspaces in a browser, collaborative, Git/SVN integration, build and run your app in customizable Docker-based runners (free tier includes: 3 GB RAM, ability to run multiple machines simultaneously), pre-integrated deploy to Google Apps
  • CodeAnywhere
  • Cloud9
  • Koding
  • VisualStudio.com — Fully-featured IDE with thousands of extensions, cross-platform app development (Microsoft extensions available for download for iOS and Android), desktop, web and cloud development, multi-language support (C#, C++, JavaScript, Python, PHP and more)
  • Coder — Platform that gives you a whole development environment build around Visual Studio Code. In the free tier you will get 2GB of project and 2 GB of container space as well as 5 hours of Fast Time that dynamically scales your container up if enabled.
  • gitpod.io — Instant, ready-to-code dev environments for GitHub projects. Free for open-source.
  • Katacoda — Interactive learning and training platform for software engineers helping developers learn and companies increase adoption.
  • ide.goorm.io goormIDE is full IDE on cloud. muti-language support, linux-based container via the fully-featured web-based terminal, port forwarding, custom url, real-time collaboration and chat, share link, Git/Subversion support. There are many more features (free tier includes 1GB RAM and 10GB Storage per container, 5 Container slot)
  • cocalc.com — (formerly SageMathCloud at cloud.sagemath.com) — Collaborative calculation in the cloud. Browser access to full Ubuntu with built-in collaboration and lots of free software for mathematics, science, data science, preinstalled: Python, LaTeX, Jupyter Notebooks, SageMath, scikitlearn, etc
  • wakatime.com — Quantified self-metrics about your coding activity, using text editor plugins, limited plan for free
  • apiary.io — Collaborative design API with instant API mock and generated documentation (Free for unlimited API blueprints and unlimited user with one admin account and hosted documentation)

Development Playgrounds

  • CodePen — A playground for the front end side of the web.
  • CodeSandbox — Online Playground for React, Vue, Angular, Preact and more.
  • StackBlitz — Online VS Code IDE for Angular & React.
  • Repl.it — A cloud coding environment for various program languages.
  • Glitch - Friendly community where everyone can discover and create the best stuff on the web. Free unlimited public/private hosting with features such as code sharing and real-time collaboration.
  • JSFiddle
  • Plunker
  • JSBin

Code Search and Browsing

  • sourcegraph.com — Java, Go, Python, Node.js, etc., code search/cross-references, free for Open Source
  • codota.com — Codota helps developers create better software, faster by providing insights learned from all the code in the world. Plugin available.
  • libraries.io — Search and dependency update notifications for 32 different package managers, free for open source
  • searchcode.com — Comprehensive text-based code search, free for Open Source

Continuous Integration (CI) / Continuous Delivery (CD)

  • CircleCI — Free for one concurrent build
  • GitLab CI — Create pipelines directly from Git repositories using GitLab's CI service. 2,000min/mo
  • Travis CI — Free for public GitHub repositories
  • CodeShip — 100 private builds/month, 5 private projects, unlimited for Open Source
  • Azure DevOps Pipeline — 10 free parallel jobs with unlimited minutes for open source for Linux, macOS, and Windows
  • codefresh.io — Free-for-Life plan: 1 build, 1 environment, shared servers, unlimited public repos
  • stackahoy.io — 100% free. Unlimited deployments, branches and builds
  • semaphoreci.com — Free for Open Source, 100 private builds per month
  • shippable.com — 150 private builds/month, free for 1 build container, private and public repos
  • appveyor.com — CD service for Windows, free for Open Source
  • github.com — Comparison of Continuous Integration services
  • ftploy.com — 1 project with unlimited deployments
  • deployhq.com — 1 project with 10 daily deployments
  • styleci.io — Public GitHub repositories only
  • bitrise.io — An iOS CI/CD with 200 free builds/month
  • buddybuild.com — Build, deploy and gather feedback for your iOS and Android apps in one seamless, iterative system
  • buddy.works — A CI/CD with 5 free projects and 1 concurrent runs (120 executions/month)
  • bitrise.io — Hosted CI/CD for iOS and Android with free unlimited builds, apps and teammembers and 1 concurrent run for OSS projects

Automated Browser Testing

  • BrowserStack — Manual and automated browser testing, free for Open Source.
  • SauceLabs — Cross browser testing, Selenium testing and mobile testing, free for Open Source.
  • gridlastic.com — Selenium Grid testing with free plan up to 4 simultaneous selenium nodes/10 grid starts/4,000 test minutes/month
  • everystep-automation.com — Records and replays all steps made in a web browser and creates scripts,... free with fewer options
  • Applitools.com — smart visual validation for web, native mobile and desktop apps. Integrates with almost all automation solutions (like Selenium and Karma) and remote runners (Sauce Labs, Browser Stack). free for open source. A free tier for a single user with limited checkpoints per week.
  • checkbot.io — Browser extension that tests if your website follows 50+ SEO, speed and security best practices. Free tier for smaller websites.

Utilities

  • PuTTY
  • FileZilla
  • XAMPP
  • fakejson.com — FakeJSON helps you quickly generate fake data using its API. Make an API request describing what you want and how you want it. The API returns it all in JSON. Speed up the go to market process for ideas and fake it till you make it.
  • JSONPlaceholder Some REST API endpoints that return some fake data in JSON format. The source code is also available if you would like to run the server locally.
  • mockable.io — Mockable is a simple configurable service to mock out RESTful API or SOAP web-services. This online service allows you to quickly define REST API or SOAP endpoints and have them return JSON or XML data

Email Services

  • Mailgun — First 10,000 emails/month free.
  • SendGrid — 100 emails/day and 2,000 contacts free.
  • MailChimp — 2,000 subscribers and 12,000 emails/month free.
  • Mandrill
  • AWS SES
  • SparkPost — First 15,000 emails/month free.
  • MailTrap — Fake SMTP server for development, free plan with 1 inbox, 50 messages, no team member, 2 emails/second, no forward rules.
  • G Suite GMail
  • Mailinator — Free, public, email system where you can use any inbox you want.
  • tinyletter.com — 5,000 subscribers/month free
  • phplist.com — Hosted version allow 300 emails/month free
  • MailerLite.com — 1,000 subscribers/month, unlimited email free
  • mailjet.com — 6,000 emails/month free
  • sendinblue.com — 9,000 emails/month free
  • zoho.com — Free email management and collaboration for up to 25 users
  • domain.yandex.com — Free email and DNS hosting for up to 1,000 users
  • moosend.com — Mailing list management service. Free account for 6 months for startups
  • debugmail.io — Easy to use testing mail server for developers
  • mailboxlayer.com — Email validation and verification JSON API for developers. 1,000 free API requests/month
  • mailcatcher.me — Catches mail and serves it through a web interface
  • yopmail.fr — Disposable email addresses
  • kickbox.io — Verify 100 emails free, real-time API available
  • inumbo.com — SMTP based spam filter, free for 10 users
  • biz.mail.ru — 5,000 mailboxes with 25 GB each per custom domain with DNS hosting
  • sendpulse.com — 50 emails free/hour, first 12,000 emails/month free
  • pepipost.com — 30k emails free for first month, then first 100 emails/day free
  • elasticemail.com — 100 free emails/day. 1,000 emails for $0.09 through API (pay as you go).
  • mail-tester.com — Test if email's dns/spf/dkim/dmarc settings are correct, 20 free/month
  • migadu.com — Email Hosting (Webmail, SMTP, IMAP, ...) — free plan is limited to 10 outgoing mails/day

Changelog

Analytics, Events and Statistics

  • Google Analytics
  • Heap Analytics — Automatically captures every user action in iOS or web apps. Free for up to 5,000 visits/month.
  • sematext.com — Free for up to 50 K actions/month, 1 day data retention, unlimited dashboards, users, etc
  • usabilityhub.com — Test designs and mockups on real people, track visitors. Free for one user, unlimited tests
  • MixPanel — Free 25,000 points or 200,000 with their badge on your site
  • amplitude.com — 1 million monthly events, up to 2 apps
  • keen.io — Custom Analytics for data collection, analysis and visualization. 50,000 events/month free
  • metrica.yandex.com — Unlimited free analytics
  • imprace.com — Landing page analysis with suggestions to improve bounce rates. Free 5 landing pages/domain
  • optimizely.com — A/B Testing solution, free starter plan, 1 website, 1 iOS and 1 Android app
  • expensify.com — Expense reporting, free personal reporting approval workflow
  • Moesif — API analytics for REST and GraphQL. (Free up to 500,000 API calls/mo).
  • New Relic - No free-tier pricing anymore.

Visitor Session Recording

  • FullStory - Your digital experience analytics platform for on-the-fly funnels, pixel-perfect replay, custom events, heat maps, advanced search, Dev Tools, and more.
  • Hotjar — Per site: 2,000 pages views/day, 3 heatmaps, data stored for 3 months, ...
  • Inspectlet — 100 sessions/month free for 1 website
  • MouseStats — 100 sessions/month free for 1 website
  • UserSurge — 250K sessions per month for individuals.

CDN and Protection

  • incapsula.com — Free CDN and DDoS protection
  • developers.google.com — The Google Hosted Libraries is a content distribution network for the most popular, Open Source JavaScript libraries
  • cdnjs.com — CDN for JavaScript libraries, CSS libraries, SWF, images, etc
  • jsdelivr.com — CDN of OSS (JS, CSS, fonts) for developers and webmasters, accepts PRs to add more
  • bootstrapcdn.com — CDN for bootstrap, bootswatch and fontawesome.io
  • toranproxy.com — Proxy for Packagist and GitHub. Never fail CD. Free for personal use, 1 developer, no support
  • Web Support Revolution — Free CDN, backup, firewall, antivirus and monitoring.
  • section.io — A simple way to spin up and manage a complete Varnish Cache solution. Supposedly free forever for one site
  • netdepot.com — First 100 GB free/month
  • speeder.io — Uses KeyCDN. Automatic image optimization and free CDN boost. Free and does not require any server changes
  • jare.io — You should log in using your GitHub account and register your domain. Uses AWS CloudFront
  • CloudFlare — Basic service is free, good for a blog, it also offers a free SSL certificate service and 5 firewall rules.

Note Taking and Reading

Teams and Collaboration

  • Google Hangouts — One place for all your conversations, for free, need a Google account.
  • Zoom — Secure Video and Web conferencing, add-ons available. Free limited to 40 minutes.
  • appear.in — One click video conversations, for free
  • meet.jit.si — One click video conversations, screen sharing, for free
  • flowdock.com — Chat and inbox, free for teams up to 5
  • slack.com — Free for unlimited users with some feature limitations
  • gitter.im — Chat, for GitHub. Unlimited public and private rooms, free for teams up to 25
  • seafile.com — Private or cloud storage, file sharing, sync, discussions. Private version is full. Cloud version has just 1 GB
  • Yammer — Private social network standalone or for MS Office 365. Free with a bit less admin tools and users management features
  • helpmonks.com — Shared inbox for teams, free for Open Source and nonprofit organizations
  • typetalk.in — Share and discuss ideas with your team through instant messaging on the web or on your mobile
  • talky.io — Free group video chat. Anonymous. Peer‑to‑peer. No plugins, signup, or payment required
  • sourcetalk.net — Code discussion tool, free for open code talks
  • helplightning.com — Help over video with augmented reality. Free without analytics, encryption, support
  • doodle.com — The scheduling tool you'll actually use. Find a date for a meeting two times faster
  • ideascale.com — Allow clients to submit ideas and vote, free for 25 members in 1 community
  • wistia.com — Video hosting with viewer analytics, HD video delivery and marketing tools to help understand your visitors, 25 videos and Wistia branded player
  • cnverg.com — Real-time shared visual workspace, whiteboard, GitHub integration. Free 5 GB, 5 spaces and 5 collaborators, no GitHub repos
  • flock.com — A faster way for your team to communicate. Free Unlimited Messages, Channels, Users, Apps & Integrations
  • Igloo — Internal portal for sharing documents, blogs and calendars etc. Free for up to 10 users.
  • riot.im — A decentralized communication tool built on Matrix. Group chats, direct messaging, encrypted file transfers, voice and video chats, and easy integration with other services.
  • Microsoft Teams — Microsoft Teams is a chat-based digital hub that brings conversations, content, and apps together in one place all from a single experience. Free for up to 300 users.
  • scinote.net — Scientific data management and team collaboration. One Team with unlimited number of users, backup and 1 GB storage space

Issue Tracking and Project/Task Management (Productivity)

  • Asana — Free for private project with collaborators.
  • Pivotal Tracker — Pivotal Tracker, free for public projects.
  • Basecamp
  • Trello — Board based project management. Free.
  • kanbantool.com — Kanban board based project management. Free, paid plans with more options
  • kanbanflow.com — Board based project management. Free, premium version with more options
  • Todoist
  • Github Issue — In addition to its Git storage facility, GitHub offers basic issue tracking
  • zenhub.io — The only project management solution inside GitHub. Free for public repos, OSS and nonprofit organizations
  • clickup.com — Project management. Free, premium version with cloud storage. Mobile applications and Git integrations available
  • LeanBoard — Collaborative whiteboard with sticky notes for your GitHub issues (Useful for Example Mapping and other techniques)
  • huboard.com — Instant project management for your GitHub issues, free for Open Source
  • taiga.io — Project management platform for startups and agile developers, free for Open Source
  • JetBrains YouTrack — Free hosted YouTrack (InCloud) for FOSS projects, private projects (free for 10 users 5 GB). Search based on time tracking, attachments on Agile Board.
  • acunote.com — Free project management and SCRUM software for up to 5 team members
  • gliffy.com — Online diagrams: flowchart, UML, wireframe,... Also plugins for Jira and Confluence. 5 diagrams and 2 MB free
  • cacoo.com — Online diagrams in real-time: flowchart, UML, network. Free max. 15 users/diagram, 25 sheets
  • draw.io — Online diagrams stored locally, in Google Drive, OneDrive or Dropbox. Free for all features and storage levels.
  • testlio.com — Issue tracking, test management and beta testing platform. Free for private use
  • vivifyscrum.com — Free tool for Agile project management. Scrum Compatible
  • targetprocess.com — Visual project management, from Kanban and Scrum to almost any operational process. Free for unlimited users, up to 1,000 data entities {more details}
  • taskulu.com — Role based project management. Free up to 5 users. Integration with GitHub/Trello/Dropbox/Google Drive
  • contriber.com — Customizable project management platform, free starter plan, 5 workspaces
  • planitpoker.com — Free online planning poker (estimation tool)
  • ubertesters.com — Test platform, integration and crowdtesters, 2 projects, 5 members
  • plan.io — Project Management with Repository Hosting and mor options. Free for 2 users with 10 customers and 500MB Storage
  • taskade.com — Real-time collaborative task lists and outlines for teams
  • zenkit.com — Project management and collaboration tool. Free for up to 5 members, 5 GB attachments.
  • Instabug — A comprehensive bug reporting and in-app feedback SDK for mobile apps. Free plan up to 1 app and 1 member.
  • Office 365 Developer — Free one-year Office 365 E3 subscription for development/testing.
  • senseitool.com — An agile retrospective tool - Free.
  • Gitlab - Offers basic issue tracking for projects.
  • Meister Task
  • LeanKit
  • Wrike
  • Microsoft Todo - (Replacing Wunderlist)
  • I Done This

Attendance, Time Tracking and Management

Content Management Systems (CMS)

Ecommerce CMS

Website Builder

  • Wix - Create HTML5 websites and mobile sites through the use of online drag and drop tools.
  • Squarespace - All-in-one solution for anyone looking to create a beautiful website.

Accounting and Finance

CRM

Customer Support/Chat

Social Media

Sales & Marketing

Video making

Design and UI

  • Designing and editing
    • Figma — Online, collaborative design tool for teams; free tier includes unlimited files and viewers with a max of 2 editors and 3 projects.
    • Sketch - A vector graphics editor. Only available for macOS X and has limited free trial.
    • Marvel — Design, prototyping and collaboration, free limited for 3 projects
    • Zeplin — Designer and developer collaboration platform. Show designs, assets and styleguides. Free for 1 project.
    • Photopea — A Free, Advanced online design editor with Adobe Photoshop UI supporting PSD, XCF & Sketch formats (Adobe Photoshop, Gimp and Sketch App).
    • designer.io — Design tool for UI, illustrations and more. Has a native app. Free
    • vectr.com — Free Design App For Web + Desktop
    • clevebrush.com — Free Graphics Design / Photo Collage App, also they offer paid integration of it as component
    • Canva
    • Pagemodo
    • Photoshop
    • Pixlr — Free online browser editor on the level of commercial ones
  • Placeholder
  • Stock Photos
  • Others

Online Logo

Data Visualization on Maps

  • MapBox — Maps, geospatial services and SDKs for displaying map data.
  • geocoder.opencagedata.com — Geocoding API that aggregates OpenStreetMap and other open geo sources. 2,500 free queries/day
  • graphhopper.com A free package for developers is offered for Routing, Route Optimization, Distance Matrix, Geocoding, Map Matching.
  • datamaps.co — a free platform for creating visualizations with data maps
  • geocod.io — Geocoding via API or CSV Upload. 2,500 free queries/day
  • gogeo.io — Maps and geospatial services with an easy to use API and support for big data
  • carto.com — Create maps and geospatial APIs from your data and public data
  • giscloud.com — Visualize, analyze and share geo data online
  • osmnames — Geocoding, search results ranked by the popularity of related Wikipedia page
  • tilehosting — Vector maps, map services and SDKs for map visualisation. Free vector tiles with weekly update and four map styles.
  • here — APIs and SDKs for maps and location-aware apps. 250k transactions/month for free.

Management System

  • Bitnami — Deploy prepared apps on IaaS. Management of 1 AWS micro instance free.
  • jamf — Device management for iPads, iPhones and Macs, 3 devices free.

Artifact Repos

  • bintray.com — JFrog Bintray hosts Open Source projects for free, and supports Docker, Maven, NuGet, npm, Debian, RPM, Conan, Vagrant, Opkg, yum, and also home to JCenter the most comprehensive collection of Maven artifacts.
  • central.sonatype.org — The default artifact repository for Apache Maven, SBT and other build systems.
  • packagecloud.io — Easy to use repository hosting for: Maven, RPM, DEB, PyPi and RubyGem packages (has free tier).
  • cloudsmith.io — Simple, secure and centralised repository service for Java/Maven, RedHat, Debian, Python, Ruby, Vagrant +more. Free tier + free for open source.
  • jitpack.io — Maven repository for JVM and Android projects on GitHub, free for public projects.

Log Management

  • humio.com — Free up to 2 GB/day with 7 days retention
  • logentries.com — Free up to 5 GB/month with 7 days retention
  • loggly.com — Free for a single user, see the lite option
  • logz.io — Free up to 1 GB/day, 3 days retention
  • papertrailapp.com — 48 hours search, 7 days archive, 100 MB/month
  • rollbar.com — Free up to 5000 events/month, 30 days retention
  • sematext.com — Free up to 500 MB/day, 7 days retention
  • sumologic.com — Free up to 500 MB/day, 7 days retention

Translation Management

  • lingohub.com — Free up to 3 users, always free for Open Source
  • getlocalization.com — Free for public projects
  • webtranslateit.com — Free up to 500 strings
  • transifex.com — Free for Open Source
  • oneskyapp.com — Limited free edition for up to 5 users, free for Open Source
  • crowdin.com — Unlimited projects, unlimited strings and collaborators for Open Source
  • Loco — Free up to 2000 translations, Unlimited translators, 10 languages/project, 1000 translatable assets/project

Monitoring

  • PagerTree - Simple interface for alerting and on-call management. Free up to 5 users.
  • OpsGenie — Powerful alerting and on-call management for operating always-on services. Free up to 5 users.
  • paessler.com — Powerful infrastructure and network monitoring solution including alerting, strong visualization capabilities and basic reporting. Free up to 100 sensors.
  • cloudsploit.com — AWS security and configuration monitoring. Free: unlimited on-demand scans, unlimited users, unlimited stored accounts. Subscription: automated scanning, API access, etc
  • elastic.co — ​Instant performance insights for JS developers. Free with 24 hours data retention
  • appneta.com — Free with 1 hour data retention
  • thousandeyes.com — Network and user experience monitoring. 3 locations and 20 data feeds of major web services free
  • datadoghq.com — Free for up to 5 nodes
  • freshping.io — Monitor 50 URLs at 1-minute interval with 10 Global locations and 5 Public status pages for Free
  • nodequery.com — Free basic server monitor up to 10 servers
  • circonus.com — Free for 20 metrics
  • uptimerobot.com — Website monitoring, 50 monitors free
  • statuscake.com — Website monitoring, unlimited tests free with limitations
  • bmc.com — Free 1 second resolution for up to 10 servers
  • ghostinspector.com — Free website and web application monitoring. Single user, 100 test runs/month
  • sematext.com — Free for 24 hours metrics, unlimited number of servers, 10 custom metrics, 500,000 custom metrics data points, unlimited dashboards, users, etc
  • stathat.com — Get started with 10 stats for free, no expiration
  • skylight.io — Free for first 100,000 requests (Rails only)
  • appdynamics.com — Free for 24 hours metrics, application performance management agents limited to one Java, one .NET, one PHP and one Node.js
  • deadmanssnitch.com — Monitoring for cron jobs. 1 free snitch (monitor), more if you refer others to sign up
  • librato.com — Free up to 100 metrics at 60 seconds resolution
  • freeboard.io — Free for public projects. Dashboards for your Internet of Things (IoT) projects
  • loader.io — Free load testing tools with limitations
  • speedchecker.xyz — Performance Monitoring API, checks Ping, DNS, etc
  • blackfire.io — Blackfire is the SaaS-delivered Application Performance Solution. Free Hacker plan (PHP only)
  • apimetrics.io — Automated API Performance Monitoring, Testing and Analytics. Free Plan, manually make API calls and Run from their West Coast servers
  • opsdash.com — Self-hoster server, clusters and services monitoring, free for 5 servers and 5 services
  • healthchecks.io — Monitor your cron jobs and background tasks. Free for up to 20 checks.
  • appbeat.io — Website monitoring, 3 monitors free. They offer very reliable and affordable monitor service.
  • assertible.com — Automated API testing and monitoring. Free plans for teams and individuals.

Crash and Exception Handling

  • Sentry — Sentry tracks app exceptions in real-time, has a small free plan. Free, unrestricted use if self-hosted
  • rollbar.com — Exception and error monitoring, free plan with 5,000 errors/month, unlimited users, 30 days retention
  • bugsnag.com — Free for up to 2,000 errors/month after the initial trial

Search

  • Algolia — Hosted search-as-you-type (instant). Free hacker plan up to 10,000 documents and 100,000 operations. Bigger free plans available for community/Open Source projects
  • swiftype.com — Hosted search solution (API and crawler). Free for a single search engine with up to 1,000 documents. Free upgrade to premium level for Open Source
  • bonsai.io — Free 1 GB memory and 1 GB storage
  • searchly.com — Free 2 indices and 5 MB storage
  • indexisto.com — Site search, free 10 million documents index limit with advertisement block
  • cloudsh.com — Powerful search for your website with a few lines of JavaScript. Free personal plan with 300 documents. Free for Open Source up to 10,000 documents.

Storage and Media Processing

  • Cloudinary — Image upload, powerful manipulations, storage and delivery for sites and apps, with libraries for Ruby, Python, Java, PHP, Objective-C and more. Perpetual free tier includes 7,500 images/month, 2 GB storage, 5 GB bandwidth.
  • Kraken — Image optimization for website performance as a service, free plan up to 1 MB file size.
  • Gumlet — Image resize-as-a-service. It also optimizes images and performs delivery via CDN. Free tier includes 1 GB bandwidth and unlimited number of image processing every month for 1 year.
  • Plot.ly — Graph and share your data. Free tier includes unlimited public files and 10 private files
  • TransloadIt — Handles file uploads and encoding of video, audio, images, documents. Free for Open Source and other do-gooders. Commercial applications get 1 GB free for test driving
  • podio.com — You can use Podio with a team of up to five people and try out the features of the Basic Plan, except users management
  • shrinkray.io — Free image optimization of GitHub repos
  • placeholder.com — A quick and simple image placeholder service.
  • placekitten.com — A quick and simple service for getting pictures of kittens for use as placeholders
  • embed.ly — Provides APIs for embedding media in a webpage, responsive image scaling, extracting elements from a webpage. Free for up to 5,000 URLs/month at 15 requests/second
  • otixo.com — Encrypt, share, copy and move all your cloud storage files from one place. Basic plan provides unlimited files transfer with 250 MB max. file size and allows 5 encrypted files
  • tinypng.com — API to compress and resize PNG and JPEG images, offers 500 compressions for free each month
  • filestack.com — File picker, transform and deliver, free for 250 files, 500 transformations and 3 GB bandwidth
  • packagecloud.io — Hosted Package Repositories for YUM, APT, RubyGem and PyPI. Limited free plans, open source plans available via request
  • image-charts.com — Unlimited image chart generation with a watermark
  • jsonbin.io — Free JSON data storage service, ideal for small-scale web apps, website, mobile apps.
  • aerofs.com — P2P file syncing, free for up to 30 users

WebRTC, STUN, Web Socket Servers and Other Routers

  • scaledrone.com — Push messaging service. Free for up to 20 simultaneous connections and 100,000 messages/day
  • pusher.com — Realtime messaging service. Free for up to 100 simultaneous connections and 200,000 messages/day
  • stun:stun.l.google.com:19302 — Google STUN
  • stun:global.stun.twilio.com:3478?transport=udp — Twilio STUN
  • segment.com — Hub to translate and route events to other third party services. 100,000 events/month free
  • ngrok.com — Expose locally running servers over a tunnel to a public URL.
  • cloudamqp.com — RabbitMQ as a Service. Little Lemur plan: max 1 million messages/month, max 20 concurrent connections, max 100 queues, max 10,000 queued messages, multiple nodes in different AZ's
  • serveo.net — Quickly expose any local port to the public internet on a servo subdomain using an SSH tunnel, includes SSH GUI to replay requests over HTTP.
  • ZeroTier — FOSS managed virtual Ethernet as a service. Unlimited end-to-end encrypted networks of 100 clients on free plan. Clients for desktop/mobile/NA; web interface for configuration of custom routing rules and approval of new client nodes on private networks.
  • Hamachi — LogMeIn Hamachi is a hosted VPN service that lets you securely extend LAN-like networks to distributed teams with free plan allows unlimited networks with up to 5 peoples
  • webhookrelay.com — Manage, debug, fan-out and proxy all your webhooks to public or internal (ie: localhost) destinations. Also, expose servers running in a private networks over a tunnel by getting a public HTTP endpoint (https://yoursubdomain.webrelay.io <----> http://localhost:8080).

Package Build System

International Mobile Number Verification API and SDK

  • cognalys.com — Freemium mobile number verification through an innovative and reliable method than using SMS gateway. Free 10 tries and 15 verifications/day
  • numverify.com — Global phone number validation and lookup JSON API. 250 API requests/month

Payment or Billing Integration

  • Stripe
  • Braintree — Credit Card, Paypal, Venmo, Bitcoin, Apple Pay,... integration. Single and Recurrent Payments. First USD 50,000 free.
  • currencylayer — Reliable Exchange Rates and Currency Conversion for your Business, 1,000 API requests/month free.
  • vatlayer — Instant VAT number validation and EU VAT rates API, free 100 API requests/month.
  • FraudLabsPro — Help merchants to prevent payment fraud and chargebacks. Free Micro Plan available with 500 queries/month.

Docker Related

  • Docker Hub — One free private repository and unlimited public repositories to build and store Docker images
  • quay.io — Build and store container images with unlimited free public repositories
  • canister.io — 20 free private repositories for developers, 30 free private repositories for teams to build and store Docker images
  • Whales — A tool to automatically dockerize your applications for free.
  • PWD — Play with Docker. A simple, interactive and fun playground to learn Docker

APIs, Data and Machine Learning

  • ProxyCrawl — Crawl and scrape websites without the need of proxies, infrastructure or browsers. We solve captchas for you and prevent you being blocked. The first 1000 calls are free of charge.
  • ApiFlash — A screenshot API based on Aws Lambda and Chrome. Handles full page, capture timing, viewport dimensions, ...
  • Scraper API — Cloud based web scraping API handles proxies, browsers, and CAPTCHAs. Scrape any web page with a simple API call. Get started with 1000 free API calls/month.
  • dreamfactory.com — Open source REST API backend for mobile, web, and IoT applications. Hook up any SQL/NoSQL database, file storage system, or external service and it instantly creates a comprehensive REST API platform with live documentation, user management,...
  • monkeylearn.com — Text analysis with machine learning, free 300 queries/month
  • wit.ai — NLP for developers
  • wolfram.com — Built-in knowledge-based algorithms in the cloud
  • parsehub.com — Extract data from dynamic sites, turn dynamic websites into APIs, 5 projects free
  • wrapapi.com — Turn any website into a parameterized API. 30k API calls per month
  • algorithmia.com — Host algorithms for free. Includes free monthly allowance for running algorithms. Now with CLI support
  • bigml.com — Hosted machine learning algorithms. Unlimited free tasks for development, limit of 16 MB data/task
  • konghq.com/ — API Marketplace and powerful tools for private and public APIs. With the free tier, some features are limited such as monitoring, alerting and support
  • dominodatalab.com — Data science with support for Python, R, Spark, Hadoop, Matlab and others
  • havenondemand.com — APIs for machine learning
  • restlet.com — APISpark enables any API, application or data owner to become an API provider in minutes via an intuitive browser interface
  • scrapinghub.com — Data scraping with visual interface and plugins. Free plan includes unlimited scraping on a shared server
  • Apify — Web scraping and automation platform that lets you create an API extracting websites data. Free tier with 10k monthly crawls and 7 days data retention.
  • Diggernaut — Cloud based web scraping and data extraction platform for turning any website to the dataset or to work with it as with an API. Free plan includes 5K page requests monthly.
  • Colaboratory — Free web-based Python notebook environment with Nvidia Tesla K80 GPU.
  • tamber — Put deep-learning powered recommendations in your app. Free 5k monthly active users.
  • Ipgeolocation — IP Geolocation API - Forever free plan for developers with 50k requests per month limit.
  • RequestBin.com — Create a free endpoint to which you can send HTTP requests. Any HTTP requests sent to that endpoint will be recorded with the associated payload and headers so you can observe requests from webhooks and other services.
  • MailboxValidator — Email verification service using real mail server connection to confirm valid email. Free API plan has 300 verifications per month.
  • IP2Location — Freemium IP geolocation service. LITE database is available for free download. Import the database in server and perform local query to determine city, coordinates and ISP information.
  • FraudLabs Pro — Screen an order transaction for credit card payment fraud. This REST API will detects all possible fraud traits based on the input parameters of an order. Free Micro plan has 500 transactions per month.
  • IPList — Lookup details about any IP address, such as Geo IP information, tor addresses, hostnames and ASN details. Free for personal and business users.

Miscellaneous

  • Calendly - Schedule meetings without the back-and-forth emails.
  • apichangelog.com — Subscribe to be notified each time API Documentation is updated (Facebook, Twitter, Google,...)
  • docsapp.io — Easiest way to publish documentation, free for Open Source
  • fullcontact.com — Help your users know more about their contacts by adding social profile into your app. 500 free Person API matches/month
  • formlets.com — Online forms, unlimited single page forms/month, 100 submissions/month, email notifications
  • superfeedr.com — Real-time PubSubHubbub compliant feeds, export, analytics. Free with less customization
  • screenshotlayer.com — Capture highly customizable snapshots of any website. Free 100 snapshots/month
  • screenshotmachine.com — Capture 100 snapshots/month, png, gif and jpg, including full-length captures, not only home page
  • readme.io — Beautiful documentation made easy, free for Open Source: see here.
  • formaholic.com — Simple form endpoint. Perfect for static sites
  • http2.pro — HTTP/2 protocol readiness test and client HTTP/2 support detection API.
  • Formspree.io — Send email using an HTTP POST request. Free tier limits to 1000 submissions per month and must expose email address in the API call.
  • Formcarry.com - HTTP POST Form endpoint, Free plan allows 100 submissions per month.
  • Typeform.com — Include beautifully designed forms on websites. Free plan allows only 10 fields per form and 100 responses per month.
  • SurveyMonkey.com — Create online surveys. Analyze the results online. Free plan allows only 10 questions and 100 responses per survey.

Other Free Resources

List of List of List

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