Open source. Open possibilities.

ZManager CLI (zm) is a universal, cross-platform file archiver focused on safe extraction of diverse formats and deliberate creation of modern archives like ZIP, 7z, and TZAP, with strong security defaults.

Simple Multi Apps - Kotlin is an open-source Android application featuring a modular collection of tools including a stopwatch, games, PDF reader, and video player.

Kivy is an open-source Python framework for developing cross-platform GUI applications for desktop, mobile, and embedded platforms.

tldr-pages is a community-maintained collection of simplified, practical help pages and cheatsheets for thousands of command-line tools, offering an approachable alternative to traditional man pages.

A highly customizable calendar library for Android and Compose Multiplatform, providing the logic for date displays while allowing developers to define the UI.

VGS Show Android SDK lets apps securely display sensitive data from a vault using customizable views and reveal flows, without routing raw data through client systems.

GSYVideoPlayer is a multi-functional Android video player supporting IJKPlayer, Media3 (ExoPlayer), MediaPlayer, and AliPlayer kernels with extensive playback, caching, and customization features.

An Android client for V2Ray that supports both Xray and v2fly cores, providing proxy capabilities on mobile devices.

Threadbase Mobile is a local-first mobile control plane for monitoring and managing AI coding agent sessions, such as Claude Code and Codex, via a connected tb-streamer instance.

Google's official Android architecture samples: the same TODO app implemented across branches to demonstrate Jetpack Compose, ViewModel, Flow/coroutines, Room, Hilt and layered testing patterns.

A curated list of Android security resources including tools for static/dynamic analysis, reverse engineering, fuzzing, and vulnerability scanning.

Sensitivity is a cross-platform Xiaomi Mi Recovery flash and rescue tool with a native WinUI 3 Windows app and a Rust CLI. It validates official Recovery ROMs, flashes them over USB, and provides diagnostics—without requiring adb, an unlocked bootloader, or proprietary Xiaomi software.

ReVanced Manager is an Android app that downloads, patches, and customizes apps using ReVanced Patcher, continuing the legacy of Vanced.

raylib is a simple, easy-to-use C library for videogame programming, ideal for prototyping, education, and graphical applications.

filepicker is a high-performance, all-in-one file picker library for Android. It blends WeChat and Douyin visual styles, implements smooth slide multi-select gestures like Huawei Gallery, supports images, videos, audio, documents, APK, archives, and offers customizable filtering and UI configuration.

Google's official Material Design icon repository, containing the current Material Symbols variable icons and the classic Material Icons set, with multiple styles, web fonts, SVG and npm packages.

Over-the-air update system for Expo and bare React Native apps with channel-based releases, targeted rollouts, rollback safety, and a bundle analysis tool called Bundle Drop Sight.

python-for-android (p4a) is a development tool that cross-compiles Python applications and their dependencies into Android APK, AAB, and AAR packages, supporting Kivy, PySDL2, PySDL3, and WebView backends.

scrcpy is a cross-platform application that mirrors Android device screens to a computer via USB or TCP/IP, allowing control via keyboard and mouse without requiring root access.

Retrofit is a type-safe HTTP client for Android and the JVM, letting developers define REST API calls as annotated Java interfaces. It requires Java 8+ or Android API 21+ and ships R8/ProGuard rules.