Spring Framework

Learn System Design concepts and prepare for interviews using free resources.

Netty project - an event-driven asynchronous network application framework

Redisson - Valkey & Redis Java client. Real-Time Data Platform. Sync/Async/RxJava/Reactive API. Over 50 Valkey and Redis based Java objects and services: Set, Multimap, SortedSet, Map, List, Queue,…

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

Graphs for Everyone

Logstash - transport and process your logs, events, or other data

The Clojure programming language

AutoMQ is a diskless Kafka® on S3. 10x Cost-Effective. No Cross-AZ Traffic Cost. Autoscale in seconds. Single-digit ms latency. Multi-AZ Availability.

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

Micronaut Application Framework

Statistical Machine Intelligence & Learning Engine

Lightweight Java and Android library for integration with Ethereum clients

Distributed Graph Database

Terasology - open source voxel world

Hackpad is a web-based realtime wiki.

An open source multi-modal trip planner

Real Time communication library using Animated Gifs as a transport™

MongoDB Connector for Hadoop

Real-Time Strategy game 3D engine coded in pure java

Isometric minimal-code style game at html5 canvas and javascript

Java streaming parser/serializer for Ion.

Micro Java Web Framework

The Mapbox Java SDK – Java wrappers around Mapbox APIs and other location data

A small, self-contained minesweeper solver written in Java

A game-theoretic poker player (written in 2005)

Implementation of the Luhny Bin coding challenge

A port of the Processing visualization language to JavaScript.

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