Open Source Pubnub Alternatives

    The best open source alternative to Pubnub is GUN, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 50 alternatives to Pubnub and 16 is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Pubnub are Supabase (Free, Open Source), MongooseIM platform (Free, Open Source), deepstream.io (Free, Open Source) and Koa (Free, Open Source).

    This page was last updated Feb 16, 2021

    1. GUN is an open source, realtime, graph database written entirely in JavaScript and built using peer-to-peer algorithms, making it surprisingly fault tolerant and easy to get started with.
    2. Supabase adds realtime and RESTful APIs to your existing PostgreSQL database without a single line of code.


      • FreeOpen Source
      • Mac
      • Linux
      • Amazon Web Services
      • Microsoft Azure
      MongooseIM is aimed at large, complex enterprise level projects, where real-time communication is critical for business success. It provides high availability, ease of deployment, development and reliability in production.
      No screenshots yet
      • FreeOpen Source
      • macOS
      • Windows
      • Linux
      • Self-Hosted
      deepstream.io is a clusterable realtime server that handles persistent tcp and websocket connections. It offers data-sync, pub/sub and request/response. It's available for Linux, Mac and Windows and comes with clients in JS, Java and many others.
      No screenshots yet
      • FreeOpen Source
      • Mac
      • Windows
      • Linux
      Expressive middleware for node.js using generators via co to make web applications and APIs more enjoyable to write. Koa's middleware flow in a stack-like manner allowing you to perform actions downstream, then filter and manipulate the response upstream.
      No screenshots yet


      • FreeOpen Source
      • Mac
      • Windows
      • Linux
      • Online
      API development tool for Web and Mobile developers.
      No screenshots yet
      • FreeOpen Source
      • Mac
      • Linux
      Pedestal is a web application framework written in Clojure that aims to bring both the language and its principles to client and server-side development.
      No screenshots yet
      • FreeOpen Source
      • Mac
      • Windows
      • Linux
      • Online
      • Android
      • iPhone
      • Windows S
      • Android Tablet
      • Windows Phone
      • Self-Hosted
      Emitter is a real-time communication service for connecting online devices. Infrastructure and APIs for IoT, gaming, apps and real-time web. At its core, emitter.
      • FreeOpen Source
      • Mac
      • Windows
      • Linux
      • Self-Hosted
      • ASP.NET
      • SignalR
      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.
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      • FreemiumOpen Source
      • Android
      • iPhone
      • Blackberry
      • Android Tablet
      • Windows Phone
      • iPad
      • Apple Watch
      • Apple TV
      • Android Wear
      Back4App is an open source backend that uses Parse framework and helps developers build scalable and extensible applications at a much more rapid pace.
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    Showing 10 of 16 alternatives