LineageOS - Operating system for smartphones and tablet computers, based on the Android
Pixel Experience - PixelExperience is an AOSP based ROM, with Google apps included and all Pixel goodies (launcher, wallpapers, icons, fonts, bootanimation).
Paranoid Android - Paranoid Android provides a unique experience and ultimate customization for your Android device.
crDroid - crDroid is designed to improve the performance, reliability and customizability of stock Android.
Sakura - sakura is a terminal emulator based on GTK and libvte
BlissRoms - An Open-Source OS, based on Android, for phones, tablets & PCs with Desktop GUI.