The Kotlin Programming Language.

Square’s meticulous HTTP client for the JVM, Android, and GraalVM.

A collection of samples to discuss and showcase different architectural tools and patterns for Android apps.

A memory leak detection library for Android.

Flexbox for Android

An Android app which provides design news & inspiration as well as being an example of implementing material design.

Framework for quickly creating connected applications in Kotlin with minimal effort

Library support for Kotlin coroutines

Thunderbird for Android – Open Source Email App for Android (fka K-9 Mail)

The flexible, easy to use, all in one drawer library for your Android project. Now brand new with material 2 design.

A curated list of awesome Kotlin related stuff Inspired by awesome-java.

A logger with a small, extensible API which provides utility on top of Android's normal Log class.

Kotlin SQL Framework

A modern I/O library for Android, Java, and Kotlin Multiplatform.

Demos the new Android Design library.

The perfect companion for your Kotlin journey - Inspired by functional, data-oriented and concurrent programming

mocking library for Kotlin

Powerful, elegant and flexible test framework for Kotlin with assertions, property testing and data driven tests.

The easiest HTTP networking library for Kotlin/Android

Painless Kotlin Dependency Injection

🚀 Plugin for Android Studio And IntelliJ Idea to generate Kotlin data class code from JSON text ( Json to Kotlin )

Using Mockito with Kotlin

A specification framework for Kotlin

Scripting enhancements for Kotlin

A layout manager for the RecyclerView with interchangeable linear, grid, and staggered displays of views, all with configurable section headers including the sticky variety as specified in the mate…

A showcase music app for Android entirely written using Kotlin language

Kotlin DSL for HTML

Insanely easy way to define clickable links within a TextView.

An Android app for experimenting with Adaptive Icons.

Functional constructs for Kotlin