Free and Open Source, Distributed, RESTful Search Engine

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

Vert.x is a tool-kit for building reactive applications on the JVM

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

A simple expressive web framework for java. Spark has a kotlin DSL https://github.com/perwendel/spark-kotlin

Distributed and fault-tolerant realtime computation: stream processing, continuous computation, distributed RPC, and more

Apache Storm

An android library for section headers that stick to the top

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

Free Android 2D OpenGL Game Engine

An open source clone of Amazon's Dynamo.

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

AndroidQuery

Building Open-Ended Embodied Agents with Internet-Scale Knowledge

Source Code to _The Busy Coder's Guide To Advanced Android Development_

Astrid: Android's #1 Task Management Application

Maven Plugin for Android Application development and more

A utility library for your daily Android needs

Structr is an integrated low-code development and runtime environment that uses a graph database.

cocos2d for android, based on cocos2d-android-0.82, and now ported from cocos2d-iphone 0.99.4. The googlecode address is here: http://code.google.com/p/cocos2d-android-1/ . There are several demos …

CommonsWare Android Components: MergeAdapter

A light-weight client-side OAuth library for Java

Lightweight Android library to parse RSS 2.0 feeds.

DEPRECATED Facebook-like slide out navigation for Android

Yaaic (Yet Another Android IRC Client) is as the name already says an Internet Relay Chat (IRC) client for Android devices.

A stock backtesting engine written in Java. And a pairs trading (cointegration) strategy implementation using a bayesian kalman filter model

The Original & Awesome GitHub App for Android

GoldenOrb is an open-source implementation of Pregel, Google's graph processing framework

Sitebricks: A fast platform for web development.