Free and Open Source, Distributed, RESTful Search Engine

Ghidra is a software reverse engineering (SRE) 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

Open Source Identity and Access Management For Modern Applications and Services

Apache Flink

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

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…

This project is deprecated and stale. The latest ExoPlayer code is available in https://github.com/androidx/media

光 HikariCP・A solid, high-performance, JDBC connection pool at last.

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

Git Server with CI/CD, Kanban, and Packages. Seamless integration. Unparalleled experience.

Suite of tools for deploying and training deep learning models using the JVM. Highlights include model import for keras, tensorflow, and onnx/pytorch, a modular and tiny c++ library for running mat…

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

Style and Grammar Checker for 25+ Languages

APM, (Application Performance Management) tool for large-scale distributed systems.

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.

Very spicy additions to the Java programming language.

AWS Service registry for resilient mid-tier load balancing and failover.

Change data capture for a variety of databases. Please log issues at https://github.com/debezium/dbz/issues.

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

A Java API for generating .java source files.

Feign makes writing java http clients easier

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

Flyway by Redgate • Database Migrations Made Easy.