OnemanBSD is based on OpenBSD 7.8 but has some major changes and fixes. Main idea is to create an OS that has all its source and documentation (including apps) inside the installer image and to be bloat free and simple enough so one man can manage support and understand and rebuild on a single machine. OnemanBSD can rebuild itself offline on an old laptop for less than 24 hours. This turns the user into OS developer as he can fix and maintain his own OS having a stable environment. All bloat that prevents one man from understanding the logic is removed. This means no rust, no gtk4, no qt and no wayland. Ports and apps are patched and fixed to remove these dependencies. It uses JWM to be simple and fast and includes text editors, file manager, word processor, mp3 player, video player, some games, audio editor, game editor and other useful apps.