Dapr 是一个可移植的、事件驱动的运行时，它使任何开发人员能够轻松构建出弹性的、无状态和有状态的应用程序，并可运行在云平台或边缘计算中，它同时也支持多种编程语言和开发框架。
ntfy 是一个基于HTTP实现pub-sub消息通知服务。接收消息设备可以是Android、IOS、浏览器。使用非常简单无需注册。
uWebSockets 是一个轻量级、高性能、安全的WebSocket 库
The most scalable and reliable MQTT broker for AI, IoT, IIoT and connected vehicles
分布式发布订阅（pub-sub）消息系统
🥊 Tiny 200 byte functional event emitter / pubsub.
ZeroMQ core engine in C++, implements ZMTP/3.1
Scalable real-time messaging server in a language-agnostic way. Self-hosted alternative to Pubnub, Pusher, Ably. Set up once and forever.
μWebSockets for Node.js back-ends :metal:
deepstream.io server
Broadcast, Presence, and Postgres Changes via WebSockets
Highly scalable realtime pub/sub and RPC framework
Policy and data administration, distribution, and real-time updates on top of Policy Agents (OPA, Cedar, ...)
High performance, distributed and low latency publish-subscribe platform.
A Microservice Toolkit from The New York Times
A distributed MQTT message broker based on Erlang/OTP. Built for high quality & Industrial use cases. The VerneMQ mission is active & the project maintained. Thank you for your support!
A micro library providing Ruby objects with Publish-Subscribe capabilities
Open source implementation of OPC UA (OPC Unified Architecture) aka IEC 62541 licensed under Mozilla Public License v2.0
The open source and enterprise-ready webhooks service 🦀