Beginner
- Recyclerview
- FastAdapter - https://github.com/mikepenz/FastAdapter
- AdapterDelegate - https://github.com/sockeqwe/AdapterDelegates / Groupie - https://github.com/lisawray/groupie / Epoxy - https://github.com/airbnb/epoxy
- FAB
- FloatingActionButton - https://github.com/futuresimple/android-floating-action-button
- Dialogs
- Material Dialogs - https://github.com/afollestad/material-dialogs
- Networking
- OkHttp - https://github.com/square/okhttp
- Retrofit - https://github.com/square/retrofit
- Fast Android Networking - https://github.com/amitshekhariitbhu/Fast-Android-Networking
- Fuel - https://github.com/kittinunf/Fuel
- Toast
- Toasty - https://github.com/GrenderG/Toasty
- Super toasts - https://github.com/JohnPersano/SuperToasts
- Toasty toast - https://github.com/yadav-rahul/TastyToast
- Snackbar
- Android KTX - https://github.com/android/android-ktx
- Anko - https://github.com/Kotlin/anko
- Picasso - https://github.com/square/picasso / Glide - https://github.com/bumptech/glide
- Material components - https://github.com/material-components/material-components-android
Advanced
- RxJava - https://github.com/ReactiveX/RxJava + RxAndroid - https://github.com/ReactiveX/RxAndroid + RxKotlin - https://github.com/ReactiveX/RxKotlin
- Conductor - https://github.com/bluelinelabs/Conductor
- LeakCanary - https://github.com/square/leakcanary
- Stetho - https://github.com/facebook/stetho / Solar
- Dagger 2 - https://github.com/google/dagger / Koin - https://github.com/Ekito/koin
- Mosby - https://github.com/sockeqwe/mosby
- MPAndroidChart - https://github.com/PhilJay/MPAndroidChart