Google core libraries for Java

Desktop/Android/HTML5/iOS Java game development framework

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

A fast dependency injector for Android and Java.

Modern Java - A Guide to Java 8

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

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

Tink is a multi-language, cross-platform, open source library that provides cryptographic APIs that are secure, easy to use correctly, and hard(er) to misuse.

Apereo CAS - Identity & Single Sign On for all earthlings and beyond.

The world's fastest open query engine for sub-second analytics both on and off the data lakehouse. With the flexibility to support nearly any scenario, StarRocks provides best-in-class performance …

Checkstyle is a development tool to help programmers write Java code that adheres to a coding standard. By default it supports the Google Java Style Guide and Sun Code Conventions, but is highly co…

Statistical Machine Intelligence & Learning Engine

The Physical Web: walk up and use anything

Infinite cycle ViewPager with two-way orientation and interactive effect.

Apache Pinot - A realtime distributed OLAP datastore

JanusGraph: an open-source, distributed graph database

Distributed Graph Database

Shattered Pixel Dungeon is an open-source traditional roguelike dungeon crawler with randomized levels and enemies, and hundreds of items to collect and use. It's based on the source code of Pixel …

Speech and Vision Based Intelligent Personal Assistant

Open-Source Subscription Billing & Payments Platform

A library that gives depth to Views.

Generates a unified GraphQL schema from gRPC microservices and other Protobuf sources

PDFsam, a desktop application to split, merge, mix, rotate PDF files and extract pages

Confluent Schema Registry for Kafka

Apache TinkerPop - a graph computing framework

Easy Machine Learning is a general-purpose dataflow-based system for easing the process of applying machine learning algorithms to real world tasks.

Apache Atlas - Open Metadata Management and Governance capabilities across the Hadoop platform and beyond

The ToroDB solution to provide better analytics on top of MongoDB and make it easier to migrate from MongoDB to SQL

Automated Canary Service