[Argorak]

There is also Go, Thoughtworks Continous Integration Platform.

http://www.thoughtworks.com/products/go-continuous-delivery

(although it came later)

[Grue3]

And also an ancient board game. Interesting that the author of Go! asked Go to change their name in one of the first bug reports, but they refused. Some people propose calling Go "Issue 9" to avoid confusion. It's probably more Google-able too.

https://code.google.com/p/go/issues/detail?id=9