Best alternative operating systems of 2025

12 Mar www.techradar.com
ArcaOS (based on OS/2).
HaikuOS of course (based on BeOS). ReactOS (still trying to reimplement Windows NT, currently about 20 years behind as it catches up to Windows Server 2003). FreeDOS (ok, makes sense) Wayne OS (Chromium OS fork intended to run from a USB thumb drive). OpenIndiana (continuing from the last open release of OpenSolaris) KolibriOS (based on MenuetOS, written in assembler, focus on retrogaming) Visopsys (a CS student project) Icaros (not exactly an Amiga clone, but reimplementing its API)