iPadOS is the mobile operating system for iPad devices from version 13 onward. Before version 13, iPad devices ran iOS.

iPadOS is the most popular iPad alternative to Ubuntu Touch.
- iPadOS is Free and Proprietary
Ubuntu Touch is described as 'The Ubuntu operating system for mobile phones originally created by Canonical and now developed by the UBports Community' and is a very popular Mobile OS in the office & productivity category. There are more than 25 alternatives to Ubuntu Touch for a variety of platforms, including Android, Linux, Linux Mobile, Android Tablet and Self-Hosted apps. The best Ubuntu Touch alternative is Android, which is both free and Open Source. Other great apps like Ubuntu Touch are LineageOS, GrapheneOS, iodéOS and /e/.
iPadOS is the mobile operating system for iPad devices from version 13 onward. Before version 13, iPad devices ran iOS.

iPadOS is the most popular iPad alternative to Ubuntu Touch.
Oniro is an Eclipse Foundation project focused on the development of a distributed open source operating system for consumer devices, regardless of the brand, model, make.


Industrial Android™ with emteria.OS Building, extending, customizing and maintaining embedded Android platform for reliable industrial applications and products.
KaiOS brings smartphone-like functionalities to affordable phones: the KaiStore for apps. Video calls over 4G. Mobile payments through NFC. Even dual-SIM support.




Project Sandcastle is the most popular iPhone alternative to Ubuntu Touch.
The major difference between Google's stock Android and OPPO's ColorOS is the latter's additional features. Such features include: customizable gestures for screen off, screen on, communication, a security centre, lock screen magazines, options for long screen shot...


Qt6/QML Wayland compositor on PostmarketOS. Runs on any device with mainline Linux support or Libhybris. Core features work at 60 FPS on OnePlus 6. Performance target: fluid on decade-old chipsets, exceptional on newer hardware.


