(Shameless plug) I maintain Zas, a Go static generator. I checked the other projects in Go and I must say it's funny to see how different are our approaches to the very same thing :)

The only big difference that makes Zas stand out is its more Unix-like spirit in how it handles extension through commands as plugins.

I'll check the list in the future and try to adquire some more "skills" for Zas.