Socket.io is the most popular Web-based, Windows, Mac & Linux alternative to SignalR.
Socket.io is the most popular Open Source & free alternative to SignalR.
- Socket.io is Free and Open Source
SignalR Alternatives
SignalR is described as 'ASP.NET SignalR is a new library for ASP.NET developers that makes it incredibly simple to add real-time web functionality to your applications. What is "real-time web" functionality? It's the ability to have your server-side code push content to the connected' and is an app in the development category. There are six alternatives to SignalR for a variety of platforms, including Mac, Windows, Linux, Web-based and Self-Hosted apps. The best SignalR alternative is Socket.io, which is both free and Open Source. Other great apps like SignalR are SockJS, Entity Signal, Higgs.IO and Butterfly Server .NET.
Alternatives list
SockJS is a browser JavaScript library that provides a WebSocket-like object. SockJS gives you a coherent, cross-browser, Js API which creates a low latency, full duplex, cross-domain communication channel between the browser and the web server.
Cost / License
- Free
- Open Source
Platforms
- Mac
- Windows
- Linux
- JavaScript
- Node.JS
Real Time Entity Framework (EF) and ASP.NET core. Make all of your data real time. Receive updates no matter where the object was created or edited. Uses existing ASP.NET core permissions system.
Cost / License
- Free
- Open Source (MIT)
Platforms
- Mac
- Windows
- Linux
- Self-Hosted
- ASP.NET


Entity Signal is the most popular Self-Hosted alternative to SignalR.
- Entity Signal is Free and Open Source
- 2 Higgs.IO alternatives
A high performance (Async), message oriented network library built for real time systems. It provides a core extensible framework and libraries built on top of the core. Libraries include WebSocket server, HTTP Server and Client and Boson a custom serialization and RMI library.
Cost / License
- Free
- Open Source
Platforms
- Mac
- Windows
- Linux
- Online

Allows creating real-time web apps with minimal effort using a C# server and Vue.js javascript clients.
Cost / License
- Free
- Open Source (MPL-2.0)
Platforms
- Mac
- Windows
- Linux

A socket.io server implementation in Rust that integrates with the Tower ecosystem and the Tokio stack. It integrates with any server framework based on tower like Axum, Warp, Salvo or Hyper. Add any other tower based middleware on top of socketioxide such as CORS...
Cost / License
- Free
- Open Source (MIT)
Platforms
- Self-Hosted








