Design patterns implemented in Java

Free and Open Source, Distributed, RESTful Search Engine

Ghidra is a software reverse engineering (SRE) framework

Termux - a terminal emulator application for Android OS extendible by variety of packages.

RxJava – Reactive Extensions for the JVM – a library for composing asynchronous and event-based programs using observable sequences for the Java VM.

The java implementation of Apache Dubbo. An RPC and microservice framework.

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

A browser automation framework and ecosystem.

Conductor is an event driven agentic orchestration platform providing durable and highly resilient execution engine for applications and AI Agents

The automation tower defense RTS

Event Driven Orchestration & Scheduling Platform for Mission Critical Applications

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

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

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…

Learn Low Level Design (LLD) and prepare for interviews using free resources.

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

IntelliJ IDEA & IntelliJ Platform

ANTLR (ANother Tool for Language Recognition) is a powerful parser generator for reading, processing, executing, or translating structured text or binary files.

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

The official home of the Presto distributed SQL query engine for big data

Quarkus: Supersonic Subatomic Java.

Apache Pulsar - distributed pub-sub messaging system

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

Apache DolphinScheduler is the modern data orchestration platform. Agile to create high performance workflow with low-code

Zuul is a gateway service that provides dynamic routing, monitoring, resiliency, security, and more.

Free implementation of Play Services

Conductor is a microservices orchestration engine.

🔎 Open source distributed and RESTful search engine.

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

A configuration as code language with rich validation and tooling.