Oglang - Language that compiles to Golang
A faster file programming language detector
An interpreted languages written in Go
Goby - Yet another programming language written in Go
Translate your Go program into multiple languages.
Skylark in Go: the Skylark configuration language, implemented in Go [MOVED to go.starlark.net]
Master Course: Concepts of Programming Languages - University of Applied Sciences Rosenheim
I keep thinking "I want to learn language X", but never know what to implement. So I'm setting myself a challenge to implement a basic AI search space algorithm in (starting with) 20 different languages.