Live ISO based on FreeBSD with GNUstep and other components, made with https://github.com/furybsd/furybsd-livecd/. This was experimental software to find out how viable GNUstep on FreeBSD is as a desktop in 2020. This work has conceptually gone into helloSystem, a desktop system based on Qt.
Download from https://github.com/probonopd/LIVEstep/releases/tag/continuous. Write to USB stick with:
sudo dd if=FuryBSD-12.1-GNUSTEP.iso of=/dev/daX bs=4m status=progress
From the running Live system, you can write the latest build to (another!) USB device using Create Live Media.app (right on the desktop).
Credentials for live media
There is no password for liveuser. There is also no root password.