The Software That Failed To Compete With Windows

harrymcc writes "When Microsoft shipped Windows 1.0 back in November 1985 — it turned 25 on Saturday — it wasn't clear that its much-delayed windowing add-on for DOS was going to succeed. After all, it was a late arrival to a market that was already teeming with ambitious competitors. A quarter-century later, it's worth remembering the early Windows rivals that didn't make it: Visi On, Top View, GEM, DESQview, and more."