HS Global Script
HS Global Script is an implementation of Global Script.
Other implementations of Global Script.
Available here; you will also need the language spec, here.
This implementation is based on a translator for Global Script code embedded in a Haskell source file; to get a working program, you will need to add <lang Haskell>import GSI.Env (runGSProgram) $gsimports
main = runGSProgram $ [gs:value|
-- Global Script code goes here
|]</lang> around the program, then compile and run that with a Haskell compiler.