Free and Open Source, Distributed, RESTful Search Engine

All Algorithms implemented in Java

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.

Getting Started with Spring Boot 3:

Apache Kafka - A distributed event streaming platform

Telegram for Android source

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

FizzBuzz Enterprise Edition is a no-nonsense implementation of FizzBuzz made by serious businessmen for serious business purposes.

JDK main-line development https://openjdk.org/projects/jdk

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

IntelliJ IDEA & IntelliJ Platform

A high performance caching library for Java

Apache Hadoop

Most popular Mocking framework for unit tests written in Java

A standalone Java Decompiler GUI

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

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…

MIT Deep Learning Book in PDF format (complete and parts) by Ian Goodfellow, Yoshua Bengio and Aaron Courville

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.

A collection of source code generators for Java.

Open source transactional distributed database. Linear scalability and proven fault-tolerance on commodity hardware or cloud infrastructure without compromising 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…

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

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

A programmer-oriented testing framework for Java — ⚠️ maintenance mode

📈 Capturing JVM- and application-level metrics. So you know what's going on.

Catch common Java mistakes as compile-time errors

✅ The programmer-friendly testing framework for Java and the JVM