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

emitter.io is described as 'Real-time communication service for connecting online devices. Infrastructure and APIs for IoT, gaming, apps and real-time web' and is a backend as a service in the development category. There are more than 50 alternatives to emitter.io for a variety of platforms, including Web-based, Windows, Mac, Linux and Android apps. The best emitter.io alternative is Supabase, which is both free and Open Source. Other great apps like emitter.io are Firebase, Meteor, RxDB and Etebase.
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...
RxDB (short for Reactive Database) is a NoSQL-database for JavaScript Applications like Websites, hybrid Apps, Electron-Apps and NodeJs. Reactive means that you can not only query the current state, but subscribe to all state-changes like the result of a query or even a single...

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.

Instant is for building real-time and offline-enabled applications. We make it easy to build collaborative products like Notion or Figma.
AWS Amplify is a complete solution that lets frontend web and mobile developers easily build, ship, and host full-stack applications on AWS, with the flexibility to leverage the breadth of AWS services as use cases evolve. No cloud expertise needed.




ApyHub offers powerful yet simple-to-use APIs that provide standard data & essential functionalities, helping developers save time and boost efficiency. ApyHub is ideal for developers who are tired of lengthy development cycles and multiple external library integrations.




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.
Scaledrone is a realtime messaging service and platform. Send live updates, create chatrooms and collaborative tools.
