Spring Framework

Getting Started with Spring Boot 3:

Netty project - an event-driven asynchronous network application framework

Apache Kafka - A distributed event streaming platform

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

Most popular Mocking framework for unit tests written in Java

Apache Pulsar - distributed pub-sub messaging system

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.

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

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

Test Automation Made Simple

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

configuration library for JVM languages using HOCON files

Keep your code spotless

The official AWS SDK for Java 1.x (In Maintenance Mode, End-of-Life on 12/31/2025). The AWS SDK for Java 2.x is available here: https://github.com/aws/aws-sdk-java-v2/

Spring integration for MyBatis 3

Fluent testing assertions for Java and the JVM

The official AWS SDK for Java - Version 2

https://openjdk.org/projects/loom

Discord4J is a fast, powerful, unopinionated, reactive library to enable quick and easy development of Discord bots for Java, Kotlin, and other JVM languages using the official Discord Bot API.

Postgresql JDBC Driver

Collection of JUnit example projects

Java API for GitHub

Slack Developer Kit (including Bolt for Java) for any JVM language

Advanced Java library for integration testing, mocking, faking, and code coverage

High throughput asynchronous task processing on Apache Kafka

Leading SIP - IMS - WebRTC Application Server

open source thread dump analysis tool