Cost / License
- Free
- Open Source
Application type
Platforms
- Mac
- Windows
- Linux
- Online
Flexible Datasync is described as 'Flexible DataSync is a BAAS with a complete client framework. Developers can build real-time applications and communication services and deploy them easily' and is a backend as a service. There are more than 50 alternatives to Flexible Datasync for a variety of platforms, including Web-based, Mac, Windows, Linux and Android apps. The best Flexible Datasync alternative is Supabase, which is both free and Open Source. Other great apps like Flexible Datasync are Firebase, Meteor, remoteStorage and GUN.
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.
restdb.io is a Plug-and-Play Database Service, suited perfectly to power business apps and dynamic web content.



CloudBoost can power your app's backend, including data storage, user authentication, real-time notifications, search and more.

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.




Grow and scale your games effortlessly with Nakama. Heroic Cloud ensures your Nakama servers are always available, regularly backed up and can be scaled up in a moment's notice for your games and apps.



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

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.

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.
The Appcelerator platform is everything you need to create great, native mobile apps—all from a single JavaScript code base.



