Distributed Workflow Engine for Microservices Orchestration

APM, Application Performance Monitoring System

Open source routing engine for OpenStreetMap. Use it as Java library or standalone web server.

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

A DLNA, UPnP and HTTP(S) Media Server.

Cruise-control is the first of its kind to fully automate the dynamic workload rebalance and self-healing of a Kafka cluster. It provides great value to Kafka users by simplifying the operation of Kafka clusters.

AssertJ is a library providing easy to use rich typed assertions

OpenGrok is a fast and usable source code search and cross reference engine, written in Java

Ecosystem to transform any database into a distributed database system, and enhance it with sharding, elastic scaling, encryption features & more

Quarkus: Supersonic Subatomic Java.

Build cross-platform Native Progressive Web Apps for iOS, Android, and the Web ⚡️

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

Apache Dubbo is a high-performance, java based, open source RPC framework.

an easy-to-use dynamic service discovery, configuration and service management platform for building cloud native applications.

Eclipse Collections is a collections framework for Java with optimized data structures and a rich, functional and fluent API.

A powerful flow control component enabling reliability, resilience and monitoring for microservices. (面向云原生微服务的高可用流控防护组件)

Free and Open, Distributed, RESTful Search Engine

CrateDB is a distributed SQL database that makes it simple to store and analyze massive amounts of machine data in real-time.

📲cim(cross IM) 适用于开发者的分布式即时通讯系统

The SpotBugs plugin for security audits of Java web applications and Android applications. (Also work with Kotlin, Groovy and Scala projects)

A libre lightweight streaming front-end for Android.

OWASP VulnerableApp Project: For Security Enthusiasts by Security Enthusiasts.

Graphical Java application for managing BibTeX and biblatex (.bib) databases

📱 Nextcloud Android app

An open source SQL database designed to process time series data, faster

🏗 Build container images for your Java applications.

Your go-to microservice framework for any situation, from the creator of Netty et al. You can build any type of microservice leveraging your favorite technologies, including gRPC, Thrift, Kotlin, Retrofit, Reactive Streams, Spring Boot and Dropwizard.

Open-source distributed computation and storage platform

Kafka GUI for Apache Kafka to manage topics, topics data, consumers group, schema registry, connect and more...

Cross-platform framework for building truly native mobile apps with Java or Kotlin. Write Once Run Anywhere support for iOS, Android, Desktop & Web.

Strongbox is an artifact repository manager.

Allure Report is a flexible, lightweight multi-language test reporting tool. It provides clear graphical reports and allows everyone involved in the development process to extract the maximum of information from the everyday testing process

The OWASP ZAP core project

🔎 Open source distributed and RESTful search engine.

An extensible multilanguage static code analyzer.

Slide is an open-source, ad-free Reddit browser for Android.

SpotBugs is FindBugs' successor. A tool for static analysis to look for bugs in Java code.

Soot - A Java optimization framework

SVG library for React Native, React Native Web, and plain React web projects.

The Data Transfer Project makes it easy for people to transfer their data between online service providers. We are establishing a common framework, including data models and protocols, to enable direct transfer of data both into and out of participating online service providers.

Collection of Quines in all programming languages

Social share, sending simple data to other apps.

Eclipse OpenJ9: A Java Virtual Machine for OpenJDK that's optimized for small footprint, fast start-up, and high throughput. Builds on Eclipse OMR (https://github.com/eclipse/omr) and combines with the Extensions for OpenJDK for OpenJ9 repo.

React Native Contacts

Astra: a Java tool for analysing and refactoring Java source code

A decentralized bitcoin exchange network

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

A classic inspired shoot em' up game written in Java with JavaFX and FXGL.

The open big data serving engine. https://vespa.ai

A podcast manager for Android

Free and open source log management

Terasology - open source voxel world

Java Bindings for V8

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.

Free universal database tool and SQL client

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