Spring Framework

Google core libraries for Java

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

MyBatis SQL mapper framework for Java

IntelliJ IDEA Community Edition & IntelliJ Platform

High Performance Inter-Thread Messaging Library

Apache Druid: a high performance real-time analytics database.

Cracking the Coding Interview 6th Ed. Solutions

Feign makes writing java http clients easier

Spring Security

A damn simple library for building production-ready RESTful web services.

Asynchronous Http and WebSocket Client library for Java

jOOQ is the best way to write SQL in Java

vʌvr (formerly called Javaslang) is a non-commercial, non-profit object-functional library that runs with Java 8+. It aims to reduce the lines of code and increase code quality.

Spring Data Example Projects

The simple, stupid rules engine for Java

OrientDB is the most versatile DBMS supporting Graph, Document, Reactive, Full-Text and Geospatial models in one Multi-Model product. OrientDB can run distributed (Multi-Master), supports SQL, ACID…

Master repository for the JGraphT project

Bouncy Castle Java Distribution (Mirror)

P6Spy is a framework that enables database data to be seamlessly intercepted and logged with no code changes to the application.

Lean & powerful HTTP apps

Postgresql JDBC Driver

Google HTTP Client Library for Java

The Open Source Java EE Reference Implementation

Alloy is a language for describing structures and a tool for exploring them. It has been used in a wide range of applications from finding holes in security mechanisms to designing telephone switch…

GraphJet is a real-time graph processing library.

MacroBase: A Search Engine for Fast Data

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Embedded PostgreSQL Server