On this front, I think SourceForge deserves a lot of respect. They've weathered acquisitions, had to find monetization methods, and through it all they've remained dedicated supporters of Open Source. The amount of money and effort they've invested in Open Source development infrastructure is admirable.

It's not beautiful, and it's got a lot of warts...but SF.net has its heart in the right place, which is something github has not yet proven.