Resurrection Remix OS is described as 'Resurrection Remix ROM is ultimately full featured, stable and combined with the best features of open source roms. We are also providing lot of awesome original Resurrection Remix ROM add-on s in the builds' and is a Android ROM in the OS & Utilities category. There are more than 25 alternatives to Resurrection Remix OS for a variety of platforms, including Android, Linux, Android Tablet, Linux Mobile and Android Wear. The best alternative is LineageOS, which is both free and Open Source. Other great apps like Resurrection Remix OS are Android (Free, Open Source), Ubuntu Touch (Free, Open Source), /e/ (Free, Open Source) and GrapheneOS (Free, Open Source).
Flyme is a stock and aftermarket firmware developed by Meizu for smartphones based on the Android operating system. Some of its key features are completely redesigned apps, one-handed usability and performance optimizations.
Asus Zen UI (stylized as ASUS ZenUI) is a front-end touch interface developed by ASUS with partners, featuring a full touch user interface. ZenUI is used by Asus for Android phones and tablet computers, and is not available for licensing by external parties.