KaiOS

vs

Remix OS

Ubuntu Touch is a free and open-source mobile operating system maintained by the UBports community. The OS was first create by Canonical LTD, the company behind the Linux distribution, Ubunutu. With Ubuntu Touch, you can use your mobile devices in a free and open manner. Ubuntu Touch also allows you to turn your phone into a desktop computer using the "desktop mode"

Android is a free and open source mobile operating system built on-top of the Linux kernel. The OS is used by over 150 million people world-wide, which makes it the most popular mobile operating system on earth. Android is optimized for how you use your phone, helping you manage conversations, organize your day, and connect with the people that matters most to you.

HarmonyOS is a free operating system designed for smartphones, smart TVs and IoT. The OS is developed by the Chinese manufacturing giant, Huawei.

Phoenix OS is an operating system specifcally designed to bring Android gaming to the PC. The OS is based on Android 7.1 and is developed and released free and open-source. With Phoenix OS you can play your Android games on a big screen, with mouse and keyboard support thanks to Octopus keymapping engine and Game Assistant, offering a powerful fundamental keymapping.

PrimeOS is an Android-x86 based OS which provides desktop experience on any x86 based device providing user top of the line features like multi-window, taskbar and deca-pro key mapper for gamers. For desktop, PrimeOS features a start menu, taskbar and action center with multitasking support with app maximize, minimize, close windows. PrimeOS share many similarities with Samsung Dex which lets you get a complete Android-Desktop experience just by connecting a monitor to your smartphone.