emteria.OS is described as 'Industrial Android™ with emteria.OS' and is an app in the OS & Utilities category. There are more than 10 alternatives to emteria.OS for Android, Linux, Android Tablet and Android Wear. The best alternative is LineageOS, which is both free and Open Source. Other great apps like emteria.OS are Android (Free, Open Source), Ubuntu Touch (Free, Open Source), /e/ (Free, Open Source) and Replicant (Free, Open Source).
A free and open-source operating system for smartphones and tablet computers, based on the Android mobile platform. It is the successor to the highly popular custom ROM CyanogenMod, from which it was forked in December 2016 when Cyanogen Inc.
Ubuntu Touch is a mobile version of the Ubuntu operating system for mobile devices. It is adapted to run naturally in a mobile, touch-screen environment but is also capable of functioning as a desktop computer while in "desktop mode".
/e/ is a fork of LineageOS that aims to be completely free of everything Google. Not only that, but there are a number of goals the developer has in mind for /e/ that more people feel are vital to a mobile operating system.
Secure Android built for encrypted and secure phones by a privacy focused company. Available as security-centric and privacy focused Google-free Android for the latest Pixel devices. Currently supported on the Pixel 2, Pixel 3, Pixel 3a, Pixel 4 and Pixel 4a series.