InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now. Learn more →
Top 23 Java WebSocket Projects
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InfluxDB
InfluxDB – Built for High-Performance Time Series Workloads. InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.
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jetlinks-community
JetLinks 基于Java8,Spring Boot 2.x ,WebFlux,Netty,Vert.x,Reactor等开发, 是一个全响应式的企业级物联网平台。支持统一物模型管理,多种设备,多种厂家,统一管理。统一设备连接管理,多协议适配(TCP,MQTT,UDP,CoAP,HTTP等),屏蔽网络编程复杂性,灵活接入不同厂家不同协议等设备。实时数据处理,设备告警,消息通知,数据转发。地理位置,数据可视化等。能帮助你快速建立物联网相关业务系统。
Project mention: JetLinks: Open-Source Reactive IoT Platform with Multi-Protocol Support | news.ycombinator.com | 2024-08-14 -
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Discord4J
Discord4J is a fast, powerful, unopinionated, reactive library to enable quick and easy development of Discord bots for Java, Kotlin, and other JVM languages using the official Discord Bot API.
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SaaSHub
SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives
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ballcat
😸一个快速开发脚手架,快速搭建企业级后台管理系统,并提供多种便捷starter进行功能扩展。主要功能包括前后台用户分离,菜单权限,数据权限,定时任务,访问日志,操作日志,异常日志,统一异常处理,XSS过滤,SQL防注入,国际化 等多种功能
Project mention: BallCat: Your New Secret Weapon for Supercharged Project Development | dev.to | 2025-04-19View the Project on GitHub
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openremote
100% open-source IoT Platform - Integrate your devices, create rules, and analyse and visualise your data
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jforgame
jforgame是一个一站式游戏服务器开发框架。包含游戏服务器开发所需要的各种组件,比如网关,socket服务端与客户端,自定义高效消息编解码,游戏热更新,游戏通用工具等等。包含游戏服,跨服,匹配服,后台管理系统等实现,同时提供大量业务案例以供学习。亦可用于其他socket应用,例如及时聊天等。
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ezyfox-server
A socket server (include SSL) supports realtime application, realtime game, MMORPG, messaging, chat and streaming data with TCP, UDP and Websocket
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webtau
WebTau (web test automation) is a testing API, command line tool and a framework to write unit, integration and end-to-end tests. Test across REST-API, WebSocket, GraphQL, Browser, Database, CLI and Business Logic with a consistent set of matchers and concepts. REPL mode speeds-up tests development. Rich reporting cuts down investigation time.
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Project mention: Simple-OpenAI: An OpenAI Java community library | news.ycombinator.com | 2025-02-10
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Firefly
Firefly is an asynchronous web framework for rapid development of high-performance web application. (by hypercube1024)
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Magician
Magician is a small HTTP service package based on Netty that makes it very easy to start an http service, and also supports WebSocket, using annotated configuration Handler, If you want to develop an http service with netty but find it cumbersome, then Magician may help you.
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SaaSHub
SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives
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A note from our sponsor - InfluxDB
www.influxdata.com | 12 Jun 2025
Index
What are some of the best open-source WebSocket projects in Java? This list will help you:
# | Project | Stars |
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1 | netty-socketio | 6,958 |
2 | jetlinks-community | 5,986 |
3 | JDA | 4,497 |
4 | atmosphere | 3,715 |
5 | Undertow | 3,653 |
6 | zfoo | 1,895 |
7 | Discord4J | 1,841 |
8 | ballcat | 1,628 |
9 | AutobahnAndroid | 1,528 |
10 | openremote | 1,426 |
11 | jforgame | 997 |
12 | ezyfox-server | 643 |
13 | java-slack-sdk | 586 |
14 | webtau | 373 |
15 | simple-openai | 316 |
16 | Firefly | 296 |
17 | module-ballerina-websocket | 116 |
18 | Magician | 107 |
19 | OEE-Designer | 99 |
20 | java-tutorials | 38 |
21 | MCWebSocketPlugin | 9 |
22 | JavaChatSpa | 6 |
23 | spring-chat-api | 6 |