What are some alternatives?
When comparing CopperheadOS and Oracle Linux, you can also consider the following products
LineageOS - Operating system for smartphones and tablet computers, based on the Android
CentOS - CentOS is a community-supported, free and open source operating system based on Red Hat Enterprise...
Replicant - Replicant is a distribution of Android that is 100% Free Software.
Red Hat Enterprise Linux - Red Hat Enterprise Linux is an open source operating system that is certified on hundreds of clouds & with thousands of hardware & software vendors.
MIUI - Xiaomi MIUI Official Global Site. MIUI is a customized Android ROM developed by Xiaomi for smartphones and tablets. MIUI Forum offers ROM downloads for 251 devices including Mi 6, Mi MIX 2, Redmi Note 4 and others.
Ubuntu - Ubuntu is a Debian Linux-based open source operating system for desktop computers.