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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

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

xuxueli / xxl-job

A distributed task scheduling framework.（分布式任务调度平台XXL-JOB）

chinabugotech / hutool

🍬A set of tools that keep Java sweet.

DrKLO / Telegram

Telegram for Android source

kestra-io / kestra

Event Driven Orchestration & Scheduling Platform for Mission Critical Applications

apolloconfig / apollo

Apollo is a reliable configuration management system suitable for microservice configuration management scenarios.

opendataloader-project / opendataloader-pdf

PDF Parser for AI-ready data. Automate PDF accessibility. Open-source.

Anuken / Mindustry

The automation tower defense RTS

alibaba / spring-cloud-alibaba

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

OtterMind / Chat2DB

Chat2DB is a free, cross-platform, local-first database client and SQL workspace for developers, DBAs, analysts, and data teams. Connect to 40+ databases, manage data, edit and run SQL, and use your own AI model to generate, explain, and optimize queries. Available on desktop, web, Docker, and CLI, with MCP support.

floci-io / floci

Light, fluffy, and always free - The AWS Local Emulator alternative

OpenAPITools / openapi-generator

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

jenkinsci / jenkins

Jenkins automation server

apache / flink

Apache Flink

apache / incubator-seata

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

bazelbuild / bazel

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

libgdx / libgdx

Desktop/Android/HTML5/iOS Java game development framework

LSPosed / LSPosed

LSPosed Framework

apache / skywalking

APM, Application Performance Monitoring System

dataease / dataease

🔥 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 / redisson

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..

google / gson

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

openjdk / jdk

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

doocs / source-code-hunter

😱 从源码层面，剖析挖掘互联网行业主流技术的底层实现原理，为广大开发者 “提升技术深度” 提供便利。目前开放 Spring 全家桶，Mybatis、Netty、Dubbo 框架，及 Redis、Tomcat 中间件等

apache / rocketmq

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

thingsboard / thingsboard

All-in-one IoT Platform - Device management, data collection, processing and visualization.

oracle / graal

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

CarGuo / GSYVideoPlayer

Video players (IJKplayer, ExoPlayer, MediaPlayer), HTTPS, 16k page size, danmaku (bullet chat) support, external subtitles, support for filters, watermarks, and GIF screenshots, pre-roll and mid-roll ads, multiple simultaneous playback, basic seeking/dragging, volume and brightness adjustment, play-while-cache support

apache / shardingsphere

Empowering Data Intelligence with Distributed SQL for Sharding, Scalability, and Security Across All Databases.

JetBrains / intellij-community

IntelliJ IDEA & IntelliJ Platform

mybatis / mybatis-3

MyBatis SQL mapper framework for Java

didi / DoKit

一款面向泛前端产品研发全生命周期的效率平台。

ReactiveX / RxAndroid

RxJava bindings for Android

YunaiV / yudao-cloud

ruoyi-vue-pro 全新 Cloud 版本，优化重构所有功能。基于 Spring Cloud Alibaba + MyBatis Plus + Vue & Element 实现的后台管理系统 + 用户小程序，支持 RBAC 动态权限、多租户、数据权限、工作流、三方登录、支付、短信、商城、CRM、ERP、MES、IM、AI 大模型、IoT 物联网等功能。你的 ⭐️ Star ⭐️，是作者生发的动力！

dromara / Sa-Token

✨ 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

APIJSON / APIJSON

🏆 Real-Time no-code, powerful and secure ORM 🚀 providing APIs and Docs without coding by Backend, and Frontend(Client) can customize response JSONs 🏆 实时零代码、全功能、强安全 ORM 库 🚀 后端接口和文档零代码，前端(客户端) 定制返回 JSON 的数据和结构