LineageOS - Operating system for smartphones and tablet computers, based on the Android
Resurrection Remix OS - Resurrection Remix ROM is ultimately full featured, stable and combined with the best features of...
Pixel Experience - PixelExperience is an AOSP based ROM, with Google apps included and all Pixel goodies (launcher, wallpapers, icons, fonts, bootanimation).
Slim ROM - SlimRoms' website, news, downloads.
Evolution X - #KeepEvolving!
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.