#1 PDF Application on GitHub that lets you edit PDFs on any device anywhere

Free and Open Source, Distributed, RESTful Search Engine

Termux - a terminal emulator application for Android OS extendible by variety of packages.

Dex to Java decompiler

A type-safe HTTP client for Android and the JVM

Render After Effects animations natively on Android and iOS, Web, and React Native

ZXing ("Zebra Crossing") barcode scanning library for Java, Android

Browse media content with your own rules on Android TV

🔥 Android developers should collect the following utils(updating).

Telegram for Android source

OpenAPI Generator allows generation of API client libraries (SDK generation), server stubs, documentation and configuration automatically given an OpenAPI Spec (v2, v3)

a fast, scalable, multi-language and extensible build system

A tool for reverse engineering Android apk files

This project is deprecated and stale. The latest ExoPlayer code is available in https://github.com/androidx/media

Free implementation of Play Services

Cute view animation collection.

Fast Android Development. Easy maintainance.

A Java API for generating .java source files.

Epoxy is an Android library for building complex screens in a RecyclerView

A fast dependency injector for Android and Java.

High-quality QR Code generator library in Java, TypeScript/JavaScript, Python, Rust, C++, C.

Apache Pinot - A realtime distributed OLAP datastore

Apache Hive

GmsCore fork for Morphe patched apps

Fully featured, open source, privacy friendly email app for Android

Decompiler from Java bytecode to Java, used in IntelliJ IDEA.

Modern super user interface implementation on Android.

Morphe Patches

Android client SDK for communicating with OAuth 2.0 and OpenID Connect providers.

Jetpack Media3 support libraries for media use cases, including ExoPlayer, an extensible media player for Android