Free and Open Source, Distributed, RESTful Search Engine

Spring Framework

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

Netty project - an event-driven asynchronous network application framework

Open Source Identity and Access Management For Modern Applications and Services

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

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

Fast Android Development. Easy maintainance.

jOOQ is the best way to write SQL in Java

Apache Pinot - A realtime distributed OLAP datastore

Google Guice on Android, version 3.0 [RETIRED]

Android UI Testing

Dozer is a Java Bean to Java Bean mapper that recursively copies data from one object to another.

Broadleaf Commerce CE - an eCommerce framework based on Java and Spring

ORMLite Android functionality used in conjunction with ormlite-core

Asynchronous Java made easier

Immutable in-memory R-tree and R*-tree implementations in Java with reactive api

Core ORMLite functionality that provides a lite Java ORM in conjunction with ormlite-jdbc or ormlite-android

Hibernate Search: full-text search for domain model

Like GWT-RPC but with REST/JSON coolness

Gradle plugin to manage Amazon Web Services

ORMLite JDBC functionality that works with JDBC drivers to attach to various database types

Hibernate Master Class is an advance course of one of the most popular JPA implementation

GWT Maps V3 Javascript Bindings

Global Travel Assessment System | A passenger data screening and analysis system for enhancing global security

OfficeFloor - inversion of coupling control

3D R-Tree in java

AWS' Flow Framework samples using Maven and Eclipse

Google Maps add-on for Vaadin 7, based on Google Maps API version 3