Free and Open Source, Distributed, RESTful Search Engine

Ghidra is a software reverse engineering (SRE) framework

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

Interview questions

Java JWT: JSON Web Token for Java and Android

OsmAnd

MapDB provides concurrent Maps, Sets and Queues backed by disk storage or off-heap-memory. It is a fast and easy to use embedded Java database engine.

Jitsi is an audio/video and chat communicator that supports protocols such as SIP, XMPP/Jabber, IRC and many other useful features.

The Apache Tika toolkit detects and extracts metadata and text from over a thousand different file types (such as PPT, XLS, and PDF).

SikuliX version 2.0.0+ (2019+)

An extremely easy way to perform background processing in Java. Backed by persistent storage. Open and free for commercial use.

Automated driver management and other helper features for Selenium WebDriver in Java

A Java library for zip files and streams

Concise UI Tests with Java!

A Minecraft plugin API

Xposed Tweak Box for devices running Android 4.1/4.2/4.3/4.4/5.0/5.1/6.0/7/8/9/10/11

Java, JavaFX themes or look and feels. Currently contains JMetro theme.

Simple Scrobbler, for Android -- last.fm, libre.fm & ListenBrainz

Android app that instantly fetches your lyrics for you.

2048 Game with Kivy

GeoJson POJOs for Jackson - serialize and deserialize objects with ease

Delimited file loader for Cassandra

Open source projection software for churches.

Breakout game for Android devices

Data Visualization Tool

Eclipse plug-in for fast code search

Add web search to text selection toolbar on Android

Tools for using axe for web accessibility testing with JUnit, Selenium, and Playwright

Hide the annoying "running in the background" Notification with this simple and small App https://play.google.com/store/apps/details?id=com.iboalali.sysnotifsnooze

A simple, minimalistic and beautiful color picker for Android 4.1+ (Jellybean+) devices