《Hello 算法》：动画图解、一键运行的数据结构与算法教程。支持 Python, Java, C++, C, C#, JS, Go, Swift, Rust, Ruby, Kotlin, TS, Dart 代码。简体版和繁体版同步更新，English version in translation

Free and Open Source, Distributed, RESTful Search Engine

#1 PDF Application on GitHub that lets you edit PDFs on any device anywhere

Everything you need to know to get the job.

Google core libraries for Java

Getting Started with Spring Boot 3:

Netty project - an event-driven asynchronous network application framework

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

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

Apache Flink

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

APM, Application Performance Monitoring 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…

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

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,…

Apache RocketMQ is a cloud native messaging and streaming platform, making it simple to build event-driven applications.

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

IntelliJ IDEA & IntelliJ Platform

CAT 作为服务端项目基础组件，提供了 Java, C/C++, Node.js, Python, Go 等多语言客户端，已经在美团点评的基础架构中间件框架（MVC框架，RPC框架，数据库框架，缓存框架等，消息队列，配置系统等）深度集成，为美团点评各业务线提供系统丰富的性能指标、健康状况、实时告警等。

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

High Performance Inter-Thread Messaging Library

Zipkin is a distributed tracing system

🚌 The IK Analysis plugin integrates Lucene IK analyzer into Elasticsearch and OpenSearch, support customized dictionary.

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

Graphs for Everyone

Apache Pulsar - distributed pub-sub messaging system

Apache Doris is an easy-to-use, high performance and unified analytics database.

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

The ZAP by Checkmarx Core project

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