A lightweight and flexible Linux® distribution that tries to Keep It Simple. https://archlinux.org/

Open-source enterprise operating system designed to be 100% bug-for-bug compatible with Red Hat Enterprise Linux®. https://rockylinux.org

A large collection of GNU and Open Source tools which provide functionality similar to a Linux distribution on Windows. https://www.cygwin.com/

A complete multitasking “UNIX-like” system available in both 32-bit and 64-bit versions. http://www.slackware.com/

A Fedora Special Interest Group that creates, maintains, and manages a high quality set of additional packages for Enterprise Linux, including, but not limited to, Red Hat Enterprise Linux (RHEL), CentOS and Scientific Linux (SL), Oracle Linux (OL). https://fedoraproject.org/wiki/EPEL