Design patterns implemented in Java

Spring Boot helps you to create Spring-powered, production-grade applications and services with absolute minimum fuss.

Everything you need to know to get the job.

All Algorithms implemented in Java

Ghidra is a software reverse engineering (SRE) framework

Spring Framework

Google core libraries for Java

Free universal database tool and SQL client

Dex to Java decompiler

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

Alibaba Java Diagnostic Tool Arthas/Alibaba Java诊断利器Arthas

A libre lightweight streaming front-end for Android.

Netty project - an event-driven asynchronous network application framework

A browser automation framework and ecosystem.

ZXing ("Zebra Crossing") barcode scanning library for Java, Android

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

Open Source Identity and Access Management For Modern Applications and Services

Spring Cloud Alibaba provides a one-stop solution for application development for the distributed solutions of Alibaba middleware.

Event Driven Orchestration & Scheduling Platform for Mission Critical Applications

The automation tower defense RTS

OpenAPI Generator allows generation of API client libraries (SDK generation), server stubs, documentation and configuration automatically given an OpenAPI Spec (v2, v3)

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

Jenkins automation server

APM, Application Performance Monitoring System

Desktop/Android/HTML5/iOS Java game development framework

A Java serialization/deserialization library to convert Java Objects into JSON and back

A tool for reverse engineering Android apk files

JDK main-line development https://openjdk.org/projects/jdk

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

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