Form Generator on MODX?

HI!
first, excuse me for my poor english

I'm coding a website on MODX Revo, and i have to create a form generator.
Forms should be created in the manager. So i could use template variables, but i don't want the users to be able to create TVs...
I found something which is exactly what i want: formBuilder, but thisone is just working on MODX evolution, and the developper just started coding the new version...
i didn't find any alternative to this plug-in.
So my question is:
Do you know a plug-in doing much the same things?

I'm building a form builder for revo. The building part is almost done. Things left to do: form generation (uses FormIt to process the form) and saving form data (after first release).

See https://github.com/jkenters/FormitMaker to check out the current (unfinished) code.