Android - Android is an open source mobile operating system initially released by Google in 2008 and has since become of the most widely used operating systems on any platform.
LineageOS - Operating system for smartphones and tablet computers, based on the Android
e.foundation /e/ - /e/ is a fork of LineageOS that aims to be completely free of everything Google.
Ubuntu Touch - Read more about Ubuntu Touch. Our free and open source mobile OS is made and maintained by UBports! We care about your freedom and privacy.
LuneOS - LuneOS is a free and open source mobile operating system that respects users’ privacy.
KaiOS - KaiOS is a light operating system for smart feature phones like the JioPhone and Nokia 8110.