Help out your favorite open source projects and become a better developer while doing it.

Property-based testing library for Kotlin

Functional companion to Kotlin's Standard Library

Using Mockito with Kotlin

Free and open source manga reader for Android

A simple 'Slide to Unlock' Material widget for Android, written in Kotlin 📱🎨🦄

Showly is a modern and slick Movies and TV Shows manager.

Image loading for Android backed by Kotlin Coroutines.

Outliner for taking notes and managing to-do lists

Main UserLAnd Repository

A beautiful and truly unique documentation engine and static site generator.

A Kotlin Multiplatform library for building network-resilient applications

A multiplatform expectation library for Kotlin

A specification framework for Kotlin

Bringing Astrid Tasks back from the dead

Ground mobile data collection app for Android

Life is too short to google for dependencies and versions

Build and deploy beautiful documentation sites that grow with you

K-9 Mail – Open Source Email App for Android

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

Easy to use OpenStreetMap editor for Android

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

A lightweight ORM framework for Kotlin with strong-typed SQL DSL and sequence APIs.

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

A modern JSON library for Kotlin and Java.

Lottie wrapper for React Native.

mocking library for Kotlin

Jitsi Videobridge is a WebRTC compatible video router or SFU that lets build highly scalable video conferencing infrastructure (i.e., up to hundreds of conferences per server).

assertions for kotlin inspired by assertj

Using Mockito with Kotlin

Kotlin wrappers for popular JavaScript libraries

The Kotlin Programming Language

DNS over HTTPS / DNS over Tor / DNSCrypt client, WireGuard proxifier, firewall, and connection tracker for Android.

The Functional toolkit for Kotlin HTTP applications. http4k provides a simple and uniform way to serve, consume, and test HTTP services.

Powerful, elegant and flexible Kotlin test framework

Framework for quickly creating connected applications in Kotlin with minimal effort

Native version of Open Food Facts on Android - Coders & Decoders welcome 🤳🥫

A full-featured browser reference implementation using Mozilla Android Components.

A family of small Kotlin libraries for delightful Android development

A powerful image downloading and caching library for Android

JVM version of Pact. Enables consumer driven contract testing, providing a mock service and DSL for the consumer project, and interaction playback and verification for the service provider project.

Write like nobody’s watching. Because they aren't.

🐘 Mastodon client for Android, iOS and Desktop (JVM)

JItsi COnference FOcus is a server side focus component used in Jitsi Meet conferences.

An anti-bikeshedding Kotlin linter with built-in formatter

Service API for Flame Nutrition Coach

Nested popup menus with smooth height animations for Android

LinkHub is a simple and effective link management application that can help you to easily manage your app with no ads!

Build form on Android using JSON schema; also includes view validation and skip logic.

🔍 Request mapper is a plugin for IntelliJ IDEA for quick navigation to URL mapping declarations

GUI for rencfs in Koltin Multiplatform with Compose