I'll give Microsoft props for open-sourcing a lot of their proprietary products (e.g. DOS, major components of Windows 3.11, etc) - though it's a shame that a l

I'll give Microsoft props for open-sourcing a lot of their proprietary products (e.g. DOS, major components of Windows 3.11, etc) - though it's a shame that a lot of their stuff can't be re-released because it includes source licensed from other companies (e.g. Internet Explorer).. Don't forget id Software too (granted, they open-source their game engines, while their game content remains paywalled - but it's the spirit that counts)