It seems like things are picking up a bit in the arena of Open source EDI, BOTS is getting better http://bots.sourceforge.net/en/index.shtml
And I just ran across this implementation of AS2 written in VBscript! http://code.google.com/p/babelas2/ can you believe that! You do know that most businesses pay a lot of money for their AS2 software…. it is insane!