Free and Open Source, Distributed, RESTful Search Engine

Netty project - an event-driven asynchronous network application framework

Open Source Identity and Access Management For Modern Applications and Services

Apache Kafka - A distributed event streaming platform

Event Driven Orchestration & Scheduling Platform for Mission Critical Applications

Hystrix is a latency and fault tolerance library designed to isolate points of access to remote systems, services and 3rd party libraries, stop cascading failure and enable resilience in complex di…

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

IntelliJ IDEA & IntelliJ Platform

A high performance caching library for Java

QuestDB is a high performance, open-source, time-series database

Quarkus: Supersonic Subatomic Java.

Cryptomator for Windows, macOS, and Linux: Secure client-side encryption for your cloud storage, ensuring privacy and control over your data.

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

Picture Selector Library for Android or 图片选择器

Redis Java client

The world's fastest open query engine for sub-second analytics both on and off the data lakehouse. With the flexibility to support nearly any scenario, StarRocks provides best-in-class performance …

Server supporting the Signal Private Messenger applications on Android, Desktop, and iOS

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

Free and open log management

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

Traccar GPS Tracking System

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.

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

Distributed Graph Database

Joda-Time is the widely used replacement for the Java date and time classes prior to Java SE 8.

The WebRTC module for React Native

OrientDB is the most versatile DBMS supporting Graph, Document, Reactive, Full-Text and Geospatial models in one Multi-Model product. OrientDB can run distributed (Multi-Master), supports SQL, ACID…

Google Go language IDE built using the IntelliJ Platform

WebRTC plugin for Flutter Mobile/Desktop/Web

Cyberduck is a libre FTP, SFTP, WebDAV, Amazon S3, Backblaze B2, Microsoft Azure & OneDrive and OpenStack Swift file transfer client for Mac and Windows.