Ghidra is a software reverse engineering (SRE) framework
Termux - a terminal emulator application for Android OS extendible by variety of packages.
Learn System Design concepts and prepare for interviews using free resources.
《Hello 算法》:动画图解、一键运行的数据结构与算法教程。支持简中、繁中、English、日本語,提供 Python, Java, C++, C, C#, JS, Go, Swift, Rust, Ruby, Kotlin, TS, Dart 等代码实现
Spring Boot helps you to create Spring-powered, production-grade applications and services with absolute minimum fuss.
A free, open-source alternative to Burp Suite: an intercepting proxy and web app security testing suite with Repeater, Intruder, Collaborator and a built-in OWASP ZAP scanner. Linux, AGPL-3.0.
Instagram without Reels, feed or ads: an open-source, updatable Instagram app for Android that keeps DMs and stories.
面向国内电视机的适配与应用升级改造:轻量 Android 电视桌面、应用配置、可恢复精简与机型验证。基于 Gathin23/tv-vibehack。
The official Java SDK for Model Context Protocol servers and clients. Maintained in collaboration with Spring AI
Apache CloudStack is an opensource Infrastructure as a Service (IaaS) cloud computing platform
Design patterns implemented in Java
😮 Core Interview Questions & Answers For Experienced Java(Backend) Developers | 互联网 Java 工程师进阶知识完全扫盲:涵盖高并发、分布式、高可用、微服务、海量数据处理等领域知识
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.
A libre lightweight streaming front-end for Android.
Open Source Identity and Access Management For Modern Applications and Services
🔥LeetCode solutions in any programming language | 多种编程语言实现 LeetCode、《剑指 Offer(第 2 版)》、《程序员面试金典(第 6 版)》题解
Netty project - an event-driven asynchronous network application framework
A browser automation framework and ecosystem.
an easy-to-use dynamic service discovery, configuration and service management platform for building AI cloud native applications.
Conductor is an event driven agentic workflow engine providing durable and highly resilient execution engine for applications and AI Agents
Event Driven Orchestration & Scheduling Platform for Mission Critical Applications
Apollo is a reliable configuration management system suitable for microservice configuration management scenarios.
PDF Parser for AI-ready data. Automate PDF accessibility. Open-source.
The automation tower defense RTS
Spring Cloud Alibaba provides a one-stop solution for application development for the distributed solutions of Alibaba middleware.
Light, fluffy, and always free - The AWS Local Emulator alternative
OpenAPI Generator allows generation of API client libraries (SDK generation), server stubs, documentation and configuration automatically given an OpenAPI Spec (v2, v3)
Jenkins automation server
:fire: Seata is an easy-to-use, high-performance, open source distributed transaction solution.
APM, Application Performance Monitoring System
🔥 人人可用的开源 BI 工具,数据可视化神器。An open-source BI tool alternative to Tableau.
Redisson: Valkey & Redis Java Client and 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, Deque, Semaphore, Lock, AtomicLong, Map Reduce, Bloom filter, Spring, Tomcat, Scheduler, JCache API, Hibernate, RPC, local cache..
A Java serialization/deserialization library to convert Java Objects into JSON and back
Apache RocketMQ is a cloud native messaging and streaming platform, making it simple to build event-driven applications.
All-in-one IoT Platform - Device management, data collection, processing and visualization.
GraalVM compiles applications into native executables that start instantly, scale fast, and use fewer compute resources 🚀
Empowering Data Intelligence with Distributed SQL for Sharding, Scalability, and Security Across All Databases.
✨ 开源、免费、一站式 Java 权限认证框架,让鉴权变得简单、优雅!—— 登录认证、权限认证、分布式 Session 会话、微服务网关鉴权、SSO 单点登录、OAuth2.0 统一认证、jwt 集成、API Key 秘钥授权、API 参数签名
Tinker is a hot-fix solution library for Android, it supports dex, library and resources update without reinstall apk.
Cryptomator for Windows, macOS, and Linux: Secure client-side encryption for your cloud storage, ensuring privacy and control over your data.
Most popular Mocking framework for unit tests written in Java
Open source alternative to Auth0 / Firebase Auth / AWS Cognito
Free implementation of Play Services
Vert.x is a tool-kit for building reactive applications on the JVM
Apache DolphinScheduler is the modern data orchestration platform. Agile to create high performance workflow with low-code
🏗 Build container images for your Java applications.
💪 A framework for assisting in the renovation of Android componentization (帮助 Android App 进行组件化改造的路由框架)
APM, (Application Performance Management) tool for large-scale distributed systems.
MeterSphere 是新一代的开源持续测试工具,内置 AI 助手,让软件测试工作更简单、更高效,不再成为持续交付的瓶颈。
Very spicy additions to the Java programming language.
Generate diagrams from textual description
LangChain4j is an idiomatic, open-source Java library for building LLM-powered applications on the JVM. It offers a unified API over popular LLM providers and vector stores, and makes implementing tool calling (including MCP support), agents and RAG easy. It integrates seamlessly with enterprise Java frameworks like Quarkus and Spring Boot.
Admin UI for administration of spring boot applications
Apache ZooKeeper
Guice (pronounced 'juice') is a lightweight dependency injection framework for Java 11 and above, brought to you by Google.
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 for multi-dimensional analytics, real-time analytics, and ad-hoc queries. A Linux Foundation project.
The Java gRPC implementation. HTTP/2 based RPC
OpenRefine is a free, open source power tool for working with messy data and improving it
A configuration as code language with rich validation and tooling.