Cost / License
- Free
- Open Source
Platforms
- Online
- Self-Hosted

Back4App is described as 'Low code backend to build modern apps. Back4app accelerate backend development, improves development productivity, reduces time to market, and let you scale applications without managing infrastructure' and is a backend as a service in the development category. There are more than 50 alternatives to Back4App for a variety of platforms, including Web-based, Self-Hosted, Windows, Android and iPhone apps. The best Back4App alternative is Supabase, which is both free and Open Source. Other great apps like Back4App are Firebase, bknd.io, Appwrite and Strapi.

CloudBoost can power your app's backend, including data storage, user authentication, real-time notifications, search and more.
Build your app in minutes. No vendor lock-in Deploy BaasBox anywhere you like with SDKs for iOS, Android and Javascript
Kuzzle is a high performance open source, on premise and cloud agnostic backend for IoT and modern apps featuring CRUD, real-time notifications, authentication, geofencing, a full featured cluster mode and more.
Databoom is a backend service solution for your WEB and mobile apps. Includes the secure cloud database, OData based query language, file storage, and more. Focus on creating front-end and stop worrying about server and database infrastructure.
GameSparks is a Backend-as-a-Service solution provider to mobile game developers to help them reduce the overall cost of development of their games and improve retention of their players and monetization of games post launch.


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.


The AnyPresence MBaaS is focused on simplifying the process of building enterprise mobile apps that run on many devices, without sacrificing developer flexibility. Users without much mobile experience or time can get started quickly, to assemble and deploy an app through a...
moBack is an enterprise-ready mobile backend platform that combines an array of services for rapid development and deployment of applications over your infrastructure of choice at Web-scale, while providing best-in-class security, scalability, and enterprise-wide visibility.