These libraries may be open source but they're still written/managed by major companies. PHP library is managed by Facebook. The Flash library is managed by Ado

These libraries may be open source but they're still written/managed by major companies. PHP library is managed by Facebook. The Flash library is managed by Adobe. The .net library? Abandoned at codeplex... Part of being a platform vendor is releasing libraries. Adobe isn't waiting for a public team to write their product, they just did it themselves because it adds value to the platform. Writing and maintaining a library for facebook doesn't require that many resources. Now I know you're response is going to be "Then why don't you do it." I wont do it because I can't write every little bit of code.