Ranked by Attention Score: stars gained over the last 90 complete days
1–100 of 345 by Attention Score · Aug 5, 2026 – Nov 2, 2026 (UTC)
Orchestrate everything, everywhere. The open-source control plane for workflows across data, infrastructure, business processes and AI agents. Declarative YAML, event-driven, any language, Git-versioned, scalable to millions of executions.
Java 面试 & 后端通用面试指南，覆盖计算机基础、数据库、分布式、高并发、系统设计与 AI 应用开发
Free universal database tool and SQL client
Free implementation of Play Services
mall项目是一套电商系统，包括前台商城系统及后台管理系统，基于Spring Boot+MyBatis实现，采用Docker容器化部署。 前台商城系统包含首页门户、商品推荐、商品搜索、商品展示、购物车、订单流程、会员中心、客户服务、帮助中心等模块。 后台管理系统包含商品管理、订单管理、会员管理、促销管理、运营管理、内容管理、统计报表、财务管理、权限管理、设置等模块。
Spring Boot helps you to create Spring-powered, production-grade applications and services with absolute minimum fuss.
Apache Kafka - A distributed event streaming platform
Apache Spark - A unified analytics engine for large-scale data processing
Platform to build admin panels, internal tools, and dashboards. Integrates with 25+ databases and any API.
Conductor is an event driven agentic workflow engine providing durable and highly resilient execution engine for applications and AI Agents
Agentic AI Framework for Java Developers
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.
🔎 Open source distributed and RESTful search engine.
Docker image that provides a Minecraft Server for Java Edition that automatically installs/upgrades versions, modloaders, modpacks and more at startup
FlatBuffers: Memory Efficient Serialization Library
A browser automation framework and ecosystem.
Official repository of Trino, the distributed SQL query engine for big data, formerly known as PrestoSQL (https://trino.io)
Access your entire server infrastructure from your local desktop
Desktop/Android/HTML5/iOS Java game development framework
微信开发 Java SDK ，支持包括微信支付，开放平台，小程序，企业微信，视频号，公众号等的后端开发
Flyway by Redgate • Database Migrations Made Easy.
Alibaba Java Diagnostic Tool Arthas/Alibaba Java诊断利器Arthas
Adaptable, fast automation for all
Quarkus: Supersonic Subatomic Java.
✨ 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
A compact and highly efficient workflow and Business Process Management (BPM) platform for developers, system admins and business users.
ZXing ("Zebra Crossing") barcode scanning library for Java, Android
Efficient reliable UDP unicast, UDP multicast, and IPC message transport
A meticulous HTTP client for the JVM, Android, and GraalVM.
mall-swarm是一套微服务商城系统，采用了 Spring Cloud Alibaba、Spring Boot 3.5、Sa-Token、MyBatis、Elasticsearch、Docker、Kubernetes等核心技术，同时提供了基于Vue的管理后台方便快速搭建系统。mall-swarm在电商业务的基础集成了注册中心、配置中心、监控中心、网关等系统功能。
Modern Java decompiler aiming to be as accurate as possible, with an emphasis on output quality. Fork of the Fernflower decompiler.
Cadence is a distributed, scalable, durable, and highly available orchestration engine to execute asynchronous long-running business logic in a scalable and resilient way.
Open source routing engine for OpenStreetMap. Use it as Java library or standalone web server.
Apache RocketMQ is a cloud native messaging and streaming platform, making it simple to build event-driven applications.
A blazingly fast multi-language serialization framework for idiomatic domain objects, schema IDL, and cross-language data exchange.
The java implementation of Apache Dubbo. An RPC and microservice framework.
Open source transactional distributed database. Linear scalability and proven fault-tolerance on commodity hardware or cloud infrastructure without compromising performance.
Apache Camel is an open source integration framework with 350+ connectors. Write routes in Java, YAML, or XML. Run on Spring Boot, Quarkus, or standalone. Apache License 2.0.
A type-safe HTTP client for Android and the JVM
Apache JMeter open-source load testing tool for analyzing and measuring the performance of a variety of services
光 HikariCP・A solid, high-performance, JDBC connection pool at last.
Spring Cloud Alibaba provides a one-stop solution for application development for the distributed solutions of Alibaba middleware.
Generate types and converters from JSON, Schema, and GraphQL
Redisson: Valkey & Redis Java Client and Real-Time Data Platform. Sync/Async/RxJava/Reactive API. Extends Valkey and Redis with over 60 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 tool for mocking HTTP services
The Apache Guacamole proxy daemon (guacd), C API (libguac), and protocol support.
A configuration as code language with rich validation and tooling.
High Performance Inter-Thread Messaging Library
Decompiler from Java bytecode to Java, used in IntelliJ IDEA.
JHipster is a development platform to quickly generate, develop, & deploy modern web applications & microservice architectures.
Apache Beam is a unified programming model for Batch and Streaming data processing.
A powerful 🚀 Android chart view / graph view library, supporting line- bar- pie- radar- bubble- and candlestick charts as well as scaling, panning and animations.
A memory leak detection library for Android.
Persistent cluster-friendly scheduler for Java
Apache ZooKeeper
The official home of the Presto distributed SQL query engine for big data
:books: 本代码库是作者小傅哥多年从事一线互联网 Java 开发的学习历程技术汇总，旨在为大家提供一个清晰详细的学习教程，侧重点更倾向编写Java核心内容。如果本仓库能为您提供帮助，请给予支持(关注、点赞、分享)！
Apache NetBeans
Google Reader inspired self-hosted personal RSS reader.
A powerful flow control component enabling reliability, resilience and monitoring for microservices. (面向云原生微服务的高可用流控防护组件)
A modern, lambda-friendly, 120 character Java formatter.
Compiles Java bytecode to JavaScript, WebAssembly and C
MyBatis SQL mapper framework for Java
Apache KIE (Knowledge Is Everything) is the home of Drools, OptaPlanner, jBPM, and Kogito.
Catch common Java mistakes as compile-time errors
Picocli is a modern framework for building powerful, user-friendly, GraalVM-enabled command line apps with ease. It supports colors, autocompletion, subcommands, and more. In 1 source file so apps can include as source & avoid adding a dependency. Written in Java, usable from Groovy, Kotlin, Scala, etc.
A better compressed bitset in Java: used by Apache Spark, Netflix Atlas, Apache Pinot, Tablesaw, and many others
🔥 HAPI FHIR - Java API for HL7 FHIR Clients and Servers
Java JWT: JSON Web Token for Java and Android
A cluster computing framework for processing large-scale geospatial data
Welcome to the AWS Code Examples Repository. This repo contains code examples used in the AWS documentation, AWS SDK Developer Guides, and more. For more information, see the Readme.md file below.
Suite of tools for deploying and training deep learning models using the JVM. Highlights include model import for keras, tensorflow, and onnx/pytorch, a modular and tiny c++ library for running math code and a java based math library on top of the core c++ library. Also includes samediff: a pytorch/tensorflow like library for running deep learn...
Apereo CAS - Identity & Single Sign On for all earthlings and beyond.
🚌 The IK Analysis plugin integrates Lucene IK analyzer into Elasticsearch and OpenSearch, support customized dictionary.
Apache OFBiz is an open source product for the automation of enterprise processes. It includes framework components and business applications for ERP, CRM, E-Business/E-Commerce, Supply Chain Management and Manufacturing Resource Planning. OFBiz provides a foundation and starting point for reliable, secure and scalable enterprise solutions.
🏗 Build container images for your Java applications.
Apache Solr open-source search software
H2O is an Open Source, Distributed, Fast & Scalable Machine Learning Platform: Deep Learning, Gradient Boosting (GBM) & XGBoost, Random Forest, Generalized Linear Modeling (GLM with Elastic Net), K-Means, PCA, Generalized Additive Models (GAM), RuleFit, Support Vector Machine (SVM), Stacked Ensembles, Automatic Machine Learning (AutoML), etc.
Java version of the Playwright testing and automation library
Simple Binary Encoding (SBE) - High Performance Message Codec
Admin UI for administration of spring boot applications
Activiti is a light-weight workflow and Business Process Management (BPM) Platform targeted at business people, developers and system admins. Its core is a super-fast and rock-solid BPMN 2 process engine for Java. It's open-source and distributed under the Apache license. Activiti runs in any Java application, on a server, on a cluster or in the cloud. It integrates perfectly with Spring, it is extremely lightweight and based on simple concepts.
An application observability facade for the most popular observability tools. Think SLF4J, but for observability.
Java wrapper for the popular chat & VOIP service: Discord https://discord.com
Micro second messaging that stores everything to disk
RxJava – Reactive Extensions for the JVM – a library for composing asynchronous and event-based programs using observable sequences for the Java VM.
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。
High Performance data structures and utility methods for Java
Nessie: Transactional Catalog for Data Lakes with Git-like semantics
The Java gRPC implementation. HTTP/2 based RPC
Modern Load Testing as Code
Conductor is a microservices orchestration engine.
Terasology - open source voxel world
JSqlParser parses an SQL statement and translate it into a hierarchy of Java classes. The generated hierarchy can be navigated using the Visitor Pattern
Build efficient Bedrock & Java Minecraft networks with multi-version support. Powers global Connect network at production scale. Runs with 10MB.
Apache Artemis