Repository Index

Framework for quickly creating connected applications in Kotlin with minimal effort

• kotlin
• web-framework
• asynchronous
• async

Library support for Kotlin coroutines

• kotlin
• coroutines
• async

privacy-first Android music player built with Material 3 Expressive. Play offline, sync lyrics, fine-tune with equalizer presets, and cast to your devices.

Media server for comics/mangas/BDs/magazines/eBooks with API, OPDS, Kobo Sync and KOReader Sync support

• kotlin
• spring-boot
• ddd
• api

Development environment for Android Jetpack extension libraries under the androidx namespace. Synchronized with Android Jetpack's primary development branch on AOSP.

• android
• jetpack
• library

An asynchronous, persistent, key-value storage system for React Native.

TranslatedA native Android audio player that combines multi-source streaming, local control, rich lyrics, and self-hosted sync. / ✨ An audio player that builds multi-source online playback, local management, lyrics experience, and self-hosted sync into native Android 🎵

• android
• music
• native-apps
• player

DAVx⁵ is an open-source CalDAV/CardDAV suite and sync app for Android. You can also access your online files (WebDAV) with it.

• caldav
• carddav
• webdav
• contacts

Cross-device clipboard sync for macOS, Windows & Linux — end-to-end encrypted, LAN-only, no cloud. OCR, CLI and MCP server built in.

• clipboard
• cross-platform
• desktop-application
• compose-desktop

👨‍💻 Squircle CE is a fast and free multi-language code editor for Android

• code-editor
• code-completion
• syntax-highlighting
• android

Made for listening, not logging in. Levyra is an open-source music player for Android and Windows, bringing music discovery, synced lyrics, radio and beautiful artwork together. No ads, no tracking, just music ♫

• kotlin
• music-player
• spotify
• youtube

Java & Kotlin Async DataBase Driver for MySQL and PostgreSQL written in Kotlin

• sql
• jdbc-driver
• jdbc
• reactive

🔥The Android Startup library provides a straightforward, performant way to initialize components at the application startup. Both library developers and app developers can use Android Startup to streamline startup sequences and explicitly set the order of initialization.

• android
• startup
• kotlin
• android-startup

Kotlin extensions for the libGDX game framework

• kotlin
• libgdx
• scene2d
• kotlin-utilities

A free, open-source Android music player for YouTube Music with an iOS-style Liquid Glass interface, synced lyrics, Automix and Listen Together.

• android
• exoplayer
• jetpack-compose
• kotlin

Kotlin Asynchronous Bluetooth Low-Energy

• bluetooth-low-energy
• kotlin-multiplatform
• kotlin-coroutines
• apple

Shift-left API Integration | Auto-fix integration drift before integration. Specmatic turns API specifications into executable contracts, continuously verifying that every change made by AI coding agents and engineers stays true to the desired behaviour. Ship AI-ready APIs 10x faster, from intent to implementation, with Spec-Driven API Development.

• contract-testing
• microservices
• contract-driven-development
• cdd

Vert.x for Kotlin

• kotlin
• vertx
• coroutines
• async

YTXTube: A lightweight YouTube and YouTube Music client with ad-free playback, synced lyrics, and high-quality downloads for Android phones, tablets, and TV.

A free, open-source Android music app with no ads, synced lyrics, background playback, and customisable themes.

Free, open-source playlist sync for Android, Windows, macOS, Linux and Docker. Keeps playlists identical across Spotify, YouTube Music, Apple Music, Amazon Music, TIDAL, Deezer, LiveOne, Anghami, Navidrome, Jellyfin and Plex. Scheduled syncs, easy review of tracks not found. No Trackhop account or server: everything stays on your devices.

• amazon-music
• android
• f-droid
• music-library

Kobby is a codegen plugin of Kotlin DSL Client by GraphQL schema. The generated DSL supports execution of complex GraphQL queries, mutation and subscriptions in Kotlin with syntax similar to native GraphQL syntax.

• kotlin
• graphql
• client
• code-generation

An asynchronous coroutine-based Kotllin client for the Chrome DevTools Protocol

• chrome-devtools-protocol
• chrome
• async
• coroutines