Operating Systems
Two different kinds of reference directory, kept separate because they answer different questions — pick the one you need below.
Linux Distributions
149 distributions
Independently forked and maintained Linux projects — Ubuntu, Fedora, Arch, and 147 more. What each one is based on, its desktop environments, package manager, and who it's built for.
Windows & MacOS Versions
31 entries
Editions and annual releases of a single vendor's product line — Windows 11 Home/Pro/Enterprise, Windows 10, MacOS Sequoia, Tahoe, and more. Release dates, end-of-support dates, and system requirements.
Custom Android ROMs
9 ROMs
Independently built Android distributions — LineageOS, GrapheneOS, CalyxOS, and more. What each is based on, its privacy/performance focus, device support, and a link to the official install page.