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

Dex to Java decompiler

A tool for reverse engineering Android apk files

FizzBuzz Enterprise Edition is a no-nonsense implementation of FizzBuzz made by serious businessmen for serious business purposes.

Learn Low Level Design (LLD) and prepare for interviews using free resources.

RxJava bindings for Android

Very spicy additions to the Java programming language.

Free implementation of Play Services

Fast Android Development. Easy maintainance.

Java JsonPath implementation

Java Native Access

Tiny, easily embeddable HTTP server in Java.

A rewrite of Tachiyomi for the Desktop

Android Unit Testing Framework

A sample Android app which showcases advanced usage of Dagger among other open source libraries.

OsmAnd

Source code to omnibus edition of _The Busy Coder's Guide to Android Development_

Text editor - Notes & ToDo (for Android) - Markdown, todo.txt, plaintext, math, ..

App to AntiSplit (merge) split APKs (APKS/XAPK/APKM) to regular .APK file on Android

Micro second messaging that stores everything to disk

Contains latest company wise questions of LeetCode as of Feb 2026.

GreenDroid is a development library for the Android platform. It makes UI developments easier and consistent through your applications.

🧩 Patches for ReVanced

Shuttle Music Player

Powerful android apk editor - aapt/aapt2 independent

The conformance checker for EPUB publications

A set of AssertJ helpers geared toward testing Android.

Lazy load of images in Android

Android library that sets an ImageView's contents from a url. Manages image downloading, caching, and makes your coffee too.