ArcaOS...the resurrected OS/2. I thought it was gone forever, but no. Some people deeply loved OS/2, though I never had a chance to play with it very much. To me it was just another DOS.
Chuckling...
I remember a tv advert for OS2.
"See the hour glass?" (A dig at waiting times on Windows where a rotating hourglass would mark time and let you know the computer had not gone on vacation )
"No i don't see any hourglass" (implication... OS2 was quicker than windows)
We were evaluating os2 at the time, true, there was no hourglass, they used a stylised clock instead