Top Welcoming Open-Source Kotlin Repositories

WebDAV (including CalDAV, CardDAV) library for the Java virtual machine (Java/Kotlin)

Just radio for Android.

AI Client for chat, RAG, plans, MCP tools, and agents. Support multiple LLMs (Anthropic, OpenAI, VertexAI, vLLM, Nvidia NIM, Gemini, OpenRouter)

Gradle plugin which identifies multiplatform targets you should be supporting

Non-Root Android performance overlay featuring live FPS meter, thermal diagnostics, and privileged gaming optimization via Shizuku.

AniList client for Android

Patches for Android TV apks

KMP MVI framework built using Compose for Compose

Fast Gesture based android launcher

A Kotlin DSL and Java/Kotlin builder API for constructing HTML-like tables which can be rendered to text

A Compose Multiplatform library which provides a modifier for display 'placeholder' UI while content is loading.

A tool designed to analyze the download size of Android applications. Provides detailed insights into app binary composition through a Gradle plugin and CLI tool to help developers optimize app size and improve user acquisition.

A text based Android Launcher with powerful features

Private photo vault for Android

A 2D canvas for rendering text, usually for console applications.

Gradle plugin for creating fat/uber JARs, transforming files, relocating packages, and optimizing applications with R8/ProGuard. The Gradle counterpart to Maven Shade Plugin.

我的自用安卓输入法，基于Rime 构建，部分功能由本人设计的本地AI模型驱动，支持五笔/拼音/自定义方案。

It's Android's first OpenOffice Document Reader!

Kotlin Multiplatform BLE library for iOS, Android, macos, windows and javascript

Privacy focused clock app built with MD3

Kickstarter for Android. Bring new ideas to life, anywhere.

Your Open Autonomous Android Agent — A production-ready, self-planning AI assistant powered by local/remote LLMs and accessibility-driven screen automation.

A sample Kotlin app which was built with modular structure, Kotlin DSL, Kotlin Coroutines, TDD and MVVM patterns.

The (official) Music Assistant Mobile app is a cross-platform client application designed for Android and iOS. Developed using Kotlin Multiplatform (KMP) and Compose Multiplatform frameworks, this project aims to provide a unified codebase for seamless music management across multiple platforms.

3D & AR SDK for Android (Jetpack Compose + Filament), iOS (SwiftUI + RealityKit), and Web. AI-first: llms.txt, MCP server, Copilot/Cursor rules. The only Compose-native 3D library.

Android application for analyzing installed apps

适用于合肥工业大学（HFUT）本科生的校园服务聚合类 Android 应用，覆盖了教学、⽣活、校内服务等 40+ 场景与功能，包括但不限于教务、校园卡等；使⽤现代的技术栈开发，提供全⾯、简洁、⾼效的使⽤体验。

LibreCuts is a free, open-source video editor for Android that prioritizes simplicity and efficiency.

Nested copies made easy in Kotlin

掌上重邮——重庆邮电大学首款整合校园与生活的App

Comprehensive Bitcoin development library for Android, implemented on Kotlin. SPV wallet implementation for Bitcoin, Bitcoin Cash, Litecoin and Dash blockchains. Fully compliant with existing standards and BIPs.

AboutLibraries automatically collects all dependencies and licenses of any gradle project (Kotlin MultiPlatform), and provides easy to integrate UI components for Android and Compose Multiplatform environments

Horologist is a group of libraries that aim to supplement Wear OS developers with features that are commonly required by developers but not yet available.

A testing library for kotlinx.coroutines Flow

スミレ - 完全オフラインの日本語キーボードアプリ

Build a StateFlow stream using Jetpack Compose

A multiplatform, compile-time dependency injection framework for Kotlin

A playground about best practices, using updated libraries and solutions in the Android world!

Your Spotify + YouTube Music library & daily mixes. Free and open source forever.

Experimental declaratively transparent kotlin multiplatform paging library

Essential tools and mods for Android nerds

An anti-bikeshedding Kotlin linter with built-in formatter

Vocable for Android

Camera & Gallery Picker for Android, Jetpack Compose, Kotlin Multiplatform and iOS. Supports CameraX, Compose UI, cropping, compression, EXIF, multiple selection and native camera.

Kernel-based Android Root Solution

Android note app with real file. Can be sync with git providers such as Github

Markdown renderer for Kotlin Multiplatform Projects (Android, iOS, Desktop), using Compose.