Free and Open Source, Distributed, RESTful Search Engine

Ghidra is a software reverse engineering (SRE) framework

RxJava – Reactive Extensions for the JVM – a library for composing asynchronous and event-based programs using observable sequences for the Java VM.

A powerful 🚀 Android chart view / graph view library, supporting line- bar- pie- radar- bubble- and candlestick charts as well as scaling, panning and animations.

An image loading and caching library for Android focused on smooth scrolling

A libre lightweight streaming front-end for Android.

Telegram for Android source

Event bus for Android and Java that simplifies communication between Activities, Fragments, Threads, Services, etc. Less code, better quality.

Hystrix is a latency and fault tolerance library designed to isolate points of access to remote systems, services and 3rd party libraries, stop cascading failure and enable resilience in complex di…

A Java serialization/deserialization library to convert Java Objects into JSON and back

Jenkins automation server

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

Open Source Identity and Access Management For Modern Applications and Services

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

SmartTube - an advanced player for set-top boxes and tvs running Android OS

A fast dependency injector for Android and Java.

An Android library for managing images and the memory they use.

Zipkin is a distributed tracing system

Powerful and flexible library for loading, caching and displaying images on Android.

🚌 The IK Analysis plugin integrates Lucene IK analyzer into Elasticsearch and OpenSearch, support customized dictionary.

The official home of the Presto distributed SQL query engine for big data

Most popular Mocking framework for unit tests written in Java

Apache Pulsar - distributed pub-sub messaging system

Open source alternative to Auth0 / Firebase Auth / AWS Cognito

Stetho is a debug bridge for Android applications, enabling the powerful Chrome Developer Tools and much more.

greenDAO is a light & fast ORM solution for Android that maps objects to SQLite databases.

OpenRefine is a free, open source power tool for working with messy data and improving it

Change data capture for a variety of databases. Please log issues at https://issues.redhat.com/browse/DBZ.

Official repository of Trino, the distributed SQL query engine for big data, formerly known as PrestoSQL (https://trino.io)

Android library to observe scroll events on scrollable views.