Free and Open Source, Distributed, RESTful Search Engine

Spring Framework

Google core libraries for Java

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

Free universal database tool and SQL client

Netty project - an event-driven asynchronous network application framework

Mirror of Apache Kafka

Apache Flink

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…

High Performance Inter-Thread Messaging Library

Zipkin is a distributed tracing system

A high performance caching library for Java

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

Apache Pulsar - distributed pub-sub messaging system

Logstash - transport and process your logs, events, or other data

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

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

Very spicy additions to the Java programming language.

Guice (pronounced 'juice') is a lightweight dependency injection framework for Java 11 and above, brought to you by Google.

Redis Java client

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

The Java gRPC implementation. HTTP/2 based RPC

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

A free, secure and open source app for Android to manage your 2-step verification tokens.

The Clojure programming language

Continuous Inspection

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

Apache Cassandra®

Java JsonPath implementation

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