The open source Firebase alternative. Supabase adds realtime and restful APIs to Postgres without a single line of code.

deepstream.io is described as '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' and is an app in the development category. There are more than 10 alternatives to deepstream.io for a variety of platforms, including Web-based, Self-Hosted, Linux, Mac and Windows apps. The best deepstream.io alternative is Supabase, which is both free and Open Source. Other great apps like deepstream.io are Firebase, Meteor, Etebase and InstantDB.
The open source Firebase alternative. Supabase adds realtime and restful APIs to Postgres without a single line of code.

Firebase, provided by Google, is a backend service and application development platform. It uses AI, cloud infrastructure, and cross-platform SDKs for efficient app development. Firebase offers tools and infrastructure for app creation and business growth.


Meteor is a set of new technologies for building top-quality web apps in a fraction of the time. It is built around Smart Packages: little bundles of code that can run on a client, inside a cloud service, or both, and that can manage their lifetime inside the modern distributed...
Instant is for building real-time and offline-enabled applications. We make it easy to build collaborative products like Notion or Figma.
Feathers is a real-time, micro-service web framework for NodeJS that gives you control over your data via RESTful resources, sockets and flexible plug-ins.
Scalable pub/sub platform offers developers secure, low-latency, enterprise-grade realtime messaging, built-in features for GPS tracking, event updates, and automatic failover, delivering billions of messages daily to users across industries on a global edge network.



Real-time communication service for connecting online devices. Infrastructure and APIs for IoT, gaming, apps and real-time web.

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.

SapphireDb is an open source library that enables you to easily create your own application with realtime data synchronization. It extends your Asp.Net Core Application with EF Core and combines the advantages of firebase and .Net Core together.
