List of free, open source smartphone operating systems

Updated: November 8, 2022

I hope to experiment with these, post some experiences, and move away from closed-source big vendor smartphone operating systems.

• postmarketOS — based on Alpine Linux
• Ubuntu Touch — based on Ubuntu
• Mobian — based on Debian
• PureOS — from Purism

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• LineageOS — based on Android
• GrapheneOS — based on Android

TODO: make a list of devices supported by most or all the above operating systems.