Free universal database tool and SQL client

Open Source Identity and Access Management For Modern Applications and Services

Apache Flink

Graphs for Everyone

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

Apache Iceberg

Testcontainers is a Java library that supports JUnit tests, providing lightweight, throwaway instances of common databases, Selenium web browsers, or anything else that can run in a Docker container.

A tool for mocking HTTP services

Hazelcast is a unified real-time data platform combining stream processing with a fast data store, allowing customers to act instantly on data-in-motion for real-time insights.

JanusGraph: an open-source, distributed graph database

Main Liquibase Source

An application observability facade for the most popular observability tools. Think SLF4J, but for observability.

Apache CloudStack is an opensource Infrastructure as a Service (IaaS) cloud computing platform

Light, fluffy, and always free - AWS Local Emulator

This is the public repository for the CFR Java decompiler

Apache Fineract

Apache Polaris, the interoperable, open source catalog for Apache Iceberg

Open Source ML Model Versioning, Metadata, and Experiment Management

Procyon is a suite of Java metaprogramming tools, including a rich reflection API, a LINQ-inspired expression tree API for runtime code generation, and a Java decompiler.

A microservices-based Streaming and Batch data processing in Cloud Foundry and Kubernetes

An open source ML system for the end-to-end data science lifecycle

The New Home for Spring Cloud AWS

All development has moved to https://github.com/awspring/spring-cloud-aws Integration for Amazon Web Services APIs with Spring

Automatic test generation for Java

High-Performance Java-Native-Persistence. Store and load any Java Object Graph or Subgraphs partially, Relieved of Heavy-weight JPA. Microsecond Response Time. Ultra-High Throughput. Minimum of Lat…

Spring XD makes it easy to solve common big data problems such as data ingestion and export, real-time analytics, and batch workflow orchestration

A simple archiving and compression library for Java

JDeodorant

MerLoc is a live AWS Lambda function development and debugging tool. MerLoc allows you to run AWS Lambda functions on your local while they are still part of a flow in the AWS cloud remote.

A tool to detect test smells in Java projects that utilize JUnit as the testing framework