ColorOS is described as 'The major difference between Google's stock Android and OPPO's ColorOS is the latter's additional features. Such features include: customizable gestures for screen off, screen on, communication, a security centre, lock screen magazines, options for long screen shot' and is a operating system in the os & utilities category. There are more than 25 alternatives to ColorOS for a variety of platforms, including Android, Linux, Android Tablet, Linux Mobile and iPhone apps. The best ColorOS alternative is Android, which is both free and Open Source. Other great apps like ColorOS are LineageOS, /e/, postmarketOS and Ubuntu Touch.