Coldfusion. Name another language supported by three commercial vendors plus a fourth open source version (smithproject.org)? My goal is simple - rapid application development.
"Name another language supported by three commercial vendors plus a fourth open source version."
I'm sure you could say the same about C++ and Java, and probably a bunch of other languages. But that doesn't really say much about the language itself, only who uses it.
But you are certainly right that the number of implementations is irrelevant, as long as there is either one good open source one or 2+ commercial ones.