First 9front release of the year is called DO NOT INSTALL
OpenBSD 7.5 locks down with improved disk encryption support and syscall limitations
X.Org Server Clears Out Remnants For Supporting Old Compilers
Oracle quietly extends Solaris 11.4 support until 2037
GNU Hurd Has Been Making Progress On Its x86_64 Support
A Chronicle of the Unix Wars
All Plan9 source code has been released under the MIT license
SerenityOS: a love letter to '90s user interfaces with a custom Unix-like core.
Minoca OS: A super light OS for the world of connected devices
Redox OS 0.6.0 - Redox - Your Next(Gen) OS
PureDarwin: a project to make darwin more usable
Friend | The Internet OS - The first ever Sky Computing platform - Leverages Internet and blockchain technologies
ReactOS is a project that aims to create an open source OS that maintains binary compatibility with windows allowing you to use windows software in a secure os.
ArcaOS 5.0 from Arca Noae is the new release of OS/2 for the 21st century
os.js, an open source java operating system that runs entirely from your browser
You can run several small operating systems in your browser including windows 98 old versions of linux and kolibriOS
Haiku Project
