- Kotlin Programming Language [Official]
- Android Kotlin Guides
- ⭐ Kotlin is Awesome!
- 👓 Kotlin is Awesome!
- From Java to Kotlin
- Kotlin Academy
- ⭐ Kotlin programmer dictionary
- Kotlin From Scratch - Envato Tuts+ Code Tutorials
- Learn kotlin in Y Minutes
- Kotlin Development
- Kotlin by Example
- Keddit — Intro: Learn Kotlin while developing an Android App
- ⭐ Kotlin coding puzzle and solutions
- Simple Mobile Tools
- GavinPacini/daysuntil: Android app demonstrating Kotlin, RxJava, Realm and More
- googlesamples/android-topeka: A fun to play quiz that showcases material design on Android
- bufferapp/android-clean-architecture-boilerplate: An android boilerplate project using clean architecture
- GitHub - JetBrains/kotlinconf-spinner
- Android-ktx | A set of Kotlin extensions for Android app development
- (deprecated) Anko | Pleasant Android application development
- A family of small Kotlin libraries for delightful Android development
- Javalin: Simple REST APIs for Java and Kotlin
- GitHub - edvin/tornadofx: Lightweight JavaFX Framework for Kotlin
- GitHub - zsmb13/MaterialDrawerKt: A Kotlin DSL wrapper around the mikepenz/MaterialDrawer library.
- KTX: Kotlin support for LibGDX applications
- RxKotlin | RxJava bindings for Kotlin
- Arrow - Functional companion to Kotlin's Standard Library
- Mockk - mocking library for Kotlin
- CameraKit is an open-source library to support the Android Camera 1 and 2 APIs
- A handy collection of most commonly used Kotlin extensions to boost your productivity in Android development
- Ktor is a framework for building asynchronous servers and clients in connected systems using Kotlin
- Korlibs is a set of Kotlin Common modern libraries
- KVision - object oriented web framework for Kotlin/JS