Cost / License
- Freemium (Pay once)
- Proprietary
Platforms
- Mac
- Windows
- Linux
- Online
- Android
- iPhone
- Chrome OS
- iPad
- Software as a Service (SaaS)

Kii is described as 'Scalable cloud backend platform for enterprise applications, consumer apps, mobile games and the Internet of Things (IoT)' and is a backend as a service in the business & commerce category. There are more than 50 alternatives to Kii, not only websites but also apps for a variety of platforms, including Android, iPhone, Windows and Mac apps. The best Kii alternative is Firebase, which is free. Other great sites and apps similar to Kii are Supabase, Etebase, GUN and 5apps.

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.




The OpenPush project aims to create a free and open source self-hosted replacement for Android Push Notifications usually sent through Google's proprietary Firebase Cloud Messaging platform.
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.



Universal Push Notification Platform
Scalable
Our platform is able to support the largest load you can possibly imagine. We have designed our solution to support tens of millions of devices... from day one. Never be afraid to grow too big.
Robust and reliable
Platform.
OneSignal is a free and multi-platform mobile push notification service designed for Websites and mobile applications.




Build your app in minutes. No vendor lock-in Deploy BaasBox anywhere you like with SDKs for iOS, Android and Javascript
The Appcelerator platform is everything you need to create great, native mobile apps—all from a single JavaScript code base.




Mobile marketing solutions across all major mobile platforms. Improve customer engagement with push notifications, location-based marketing, and analytics.
Cloud communication and data backend. Supports chat, video calling, push notifications as well as data APIs for iOS, Android, Javascript and Windows.
Backendless is a complete visual app development platform that offers a fully integration UI Builder, real-time database, robust backend with Codeless logic, team-driven development, and bulletproof security.




RapidAPI lets you easily find and connect to practically any API in the world while also providing the easiest way to track and manage the ones you use, in just one place. No need to search through massive API docs either, RapidAPI's intuitive interface gives developers a...


