Scalable real-time messaging server in a language-agnostic way. Self-hosted alternative to Pubnub, Pusher, Ably, socket.io, Phoenix.PubSub, SignalR. Set up once and forever.

• UpdatedNov 20, 2025
• Go

🪽 An open, easy, fast, reliable and battery-efficient solution for real-time communications

• UpdatedNov 28, 2025
• Go

A proxy server for adding push to your API, used at the core of Fastly's Fanout service

• UpdatedNov 20, 2025
• Rust

Small self-contained pure-Go web server with Lua, Teal, Markdown, Ollama, HTTP/2, QUIC, Redis, SQLite and PostgreSQL support ++

• UpdatedNov 27, 2025
• Go

A better API for making Event Source requests, with all the features of fetch()

• UpdatedApr 13, 2024
• TypeScript

API Dash is a beautiful AI-powered open-source cross-platform (Desktop & Mobile) API Client built using Flutter which can help you easily create & customize your HTTP & GraphQL API requests, visually inspect responses and generate API integration code. A lightweight alternative to postman/insomnia.

• UpdatedNov 21, 2025
• Dart

Your high performance web application C framework

• UpdatedSep 23, 2025
• C

Corvusoft's Restbed framework brings asynchronous RESTful functionality to C++14 applications.

• UpdatedNov 16, 2025
• C++

Fullstack SaaS Boilerplate built with tRPC, Fastify and React

• UpdatedNov 27, 2025
• TypeScript

EventSource client for Node.js, browsers and other JavaScript runtimes

• UpdatedNov 21, 2025
• TypeScript

Swell: API development tool that enables developers to test endpoints served over streaming technologies including Server-Sent Events (SSE), WebSockets, HTTP2, GraphQL, gRPC, and tRPC..

• UpdatedFeb 14, 2025
• JavaScript

⬆ Dead simple, dependency-less, spec-compliant server-sent events implementation written in TypeScript

• UpdatedNov 9, 2025
• TypeScript

🦎 A multi-protocol edge & service proxy. Seamlessly interface web apps, IoT clients, & microservices to Apache Kafka® via declaratively defined, stateless APIs.

• UpdatedNov 19, 2025
• Java

Create low-latency, interactive user experiences for stateless microservices.

• UpdatedNov 6, 2023
• Elixir

A flexible Server-Sent Events EventSource polyfill for Javascript

• UpdatedNov 26, 2025
• JavaScript

Arri RPC is a code-first RPC framework for end-to-end type safety in any language

• UpdatedNov 22, 2025
• TypeScript

Fully featured, spec-compliant HTML5 server-sent events library

• UpdatedMay 13, 2025
• Go

JavaScript client SDK to communicate with Centrifugo and Centrifuge-based server from browser, NodeJS and React Native. Supports WebSocket, HTTP-streaming over Fetch and Readable Stream API, EventSource, WebTransport.

• UpdatedOct 19, 2025
• JavaScript

A simple and efficient library implemented HTML5's server-sent events by PHP, is used to real-time push events from server to client, and easier than Websocket, instead of AJAX request.

• UpdatedMar 4, 2021
• PHP

Azure SignalR Service SDK for .NET

• UpdatedNov 7, 2025
• C#