OpenBSD Alternatives

FreeBSD is a free and open-source Unix-like operating system descended from the Berkeley Software Distribution. FreeBSD was first released as in 1993, and is today the most popular free and open-source BSD operating system on the market today. In total, FreeBSD accounts for more than 75% of the market. FreeBSD can be installed easily on most machines and is licensed under the permissive BSD License.

TrueOS, previously known as PC-BSD is a BSD-based desktop operating system with Unix-like features.

TrueOS has been discontinued but the source code will remain available on GitHub.

MidnightBSD is a free and open-source desktop operating system for x86 and x86-64 based PCs. The OS is originally forked from FreeBSD 6.1, and periodically updated with code and drivers from later FreeBSD releases. The developers behind MidnightBSD has been stringing since 2006 create an easy-to-use operating system that everyone can use, freely. 

GhostBSD is a free an open-source operating system based on FreeBSD. GhostBSD comes pre-installed with MATE desktop, OpenRC, the LibreOffice suite and OS packages for simplicity adn ease-of-use.

Asahi Linux is a free and open source Linux distrobution that aims to bring you a polished Linux experience on Apple Silicon Macs. With Asahi Linux you can finally run your favorite open source operating system on the new line Mac's, starting with the 2020 M1 Mac Mini, MacBook Air, and MacBook Pro.