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View Regex Tools &


Online Regex Tester Suites & Code Generators

  • regex101 Online regex tester for PHP, PCRE, JavaScript and Python that highlights pattern and matches on the fly. Also features a code generator and a regex debugger!
  • myregextester Sports a separate regex split tester and allows to optimize patterns (I guess this is based on Perl's Regexp::Optimizer module).
  • regexr Online regex tester with good regex replace and explain functionality.
  • debuggex Shows neat expression diagrams (not active anymore).
  • regexper translates regular expressions into an SVG image (for documentation or embedding)
  • RexV2 Evaluator for PHP PCRE, PHP Posix!, Perl, Python, Javascript, Node.JS!
View XML, XSLT, XPath Tools &


XPath Online Checker (shareable)

  • videlibri: Template / XPath 3.0 / XQuery 3.0 / CSS 3 Selector / JSONiq Online Tester
  • XPath Evaluator: Online XPath tester that supports XPath 3.0 and XQuery 3.0 via Saxon-HE 9.7 and XPath 1.0 via .NET XPath engine (GitHub).
  • BeautifyConverter XPath Tester (requires free registration, sports many other useful online tools like minifiers, beautifiers, converters, validators, etc.)
fghber / Online code
Last active Jan 7, 2020
Online code utilities
View Online code

Web IDEs

ideone Ideone is an online compiler and debugging tool which allows youto compile source code and execute it online in more than 60 programming languages and share links to the code. Like ideaone, can also install missing Python packages.
Onlilne GDB Online compiler and debugger forC, C++, Python, Java, PHP, Ruby, Perl, Pascal, Fortran, Haskell, Objective-C, Assembly, HTML, CSS, JS, SQLite, Prolog, and more.
Coding Ground Advanced IDEs for C/C++, C#, GO, Java, PHP, Perl, Python, Octave/MATLOAB, R, Ruby, Scala, and compiler/interpreter for many other languages and frameworks.
JDOODLE very similar to ideone but a somewhat different set of languagse/compilers.


fghber / htaccess and
Last active May 9, 2019
htaccess and mod_rewrite
View htaccess and

SQL/DB Fiddles

  • SQL Fiddle]( MySQL 5.6, Oracle 11g R2, PostgreSQL 9.3/9.6, SQLite (WebSQL, SQL.js), MS SQL Server 2017.
  • db<>fiddle An online tool for testing, demonstrating and sharing database commands and scripts.
    Features MariaDB 10.x, MySQL 8.0, Oracle 11g, Postgress 8.4 -10, SQL Server 2012 - 2017, SQLite 3.8.
  • DB Fiddle Supports MySQL 5.5-8.0, PostgreSQL 9.4-10, and SQLite database engines.
  • rextester Supports MySQL, MS SQL 5.7, Oracle 11g, PostgreSQL 9.6, Server 2014.


View Web Scraping
### rvest
* [Beginner’s Guide on Web Scraping in R (using rvest)](
fghber /
Created Jun 8, 2018 — forked from swdunlop/
Random string generator using regex-like expressions
#!/usr/bin/env python
# Copyright (C) 2010, Scott W. Dunlop <swdunlop at>
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
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