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

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

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

Your high performance web application C framework

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

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

API Dash is a beautiful open-source cross-platform (macOS, Windows, Linux, Android & iOS) API Client built using Flutter which can help you easily create & customize your API requests, visually inspect responses and generate API integration code. A lightweight alternative to postman/insomnia.

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..

EventSource client for Node.js and Browser (polyfill)

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

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

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

A flexible Server-Sent Events EventSource polyfill for 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.

Azure SignalR Service SDK for .NET

The Mercure Component allows to easily push updates to web browsers and other HTTP clients using the Mercure protocol.

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.

SapphireDb Server, a self-hosted, easy to use realtime database for Asp.Net Core and EF Core

Zero-dependency, HTTP/1 safe, simple, GraphQL over Server-Sent Events Protocol server and client.

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