What? No mention of OS/2?
When I worked at IBM supporting it (OS/2.1 thru OS/2 Warp Server) the OS was very stable. There were no virus' that I can recall.
Its downfall was lack of sufficient marketing, lack of support by IBM, and MS' marketshare.
We had a lot of big companies using it, including the FBI.
Not to mention, a lot of banks ran some flavor of OS/2 on their ATMs.
Now, most (all?) run some flavor of Windows. Not too stable. I've had a couple crash on me and reboot when trying to get money or deposit.
Fortunately, when that happens the ATM kicks the card back out!
