Microsoft’s original source code

Microsoft (and maybe even Bill Gates personally) generated a strong "dislike" sentiment to the hacker community. But we can't deny that he and Paul Allen were pure breed hackers and helped a lot the development of technology. Of course, we all prefer OSS and we'd pick Linus (or insert OSS dev name here) 100 times over one of the "evil capitalists"/s, but nevertheless they have to be recognized.

Gates showed his true colors right up front with the "Open Letter to Hobbyists", and pursued the rest of his career in like fashion. It's not just about Microsoft versus open source: many of us already resented their strong-arming, dominance-oriented, rent-seeking, ownership-hungry monopolistic approach to computing before the free software movement had really gotten going, or the term "open source" had even been invented.