Spring Boot

Free and Open, Distributed, RESTful Search Engine

Everything you need to know to get the job.

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

A browser automation framework and ecosystem.

Mirror of Apache Kafka

🔥 Seata is an easy-to-use, high-performance, open source distributed transaction solution.

Apache Flink

Redisson - Easy Redis Java client and Real-Time Data Platform. Valkey compatible. Sync/Async/RxJava/Reactive API. Over 50 Redis based Java objects and services: Set, Multimap, SortedSet, Map, List,…

Desktop/Android/HTML5/iOS Java game development framework

Jenkins automation server

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

GraalVM compiles Java applications into native executables that start instantly, scale fast, and use fewer compute resources 🚀

RxJava bindings for Android

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

An Android library for managing images and the memory they use.

Zipkin is a distributed tracing system

A collection of algorithms and data structures

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

Most popular Mocking framework for unit tests written in Java

Apache Hadoop

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

QuestDB is an open source time-series database for fast ingest and SQL queries

Apache Pulsar - distributed pub-sub messaging system

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.