Ten years ago, IBM launched OS/2 2.0 and it changed the world. When you look at your coomputer right now, whether it be Windows, Linux, Mac or something else, know this: it would be a lot different had OS/2 never existed. Its influence on personal computing is hard to gauge. To celebrate its tenth birthday, I've written a tribute to it and explain some of the things it introduced.

(reposted due to comments being broken)