I'm not using Perl anymore right now so there is little motivation to continue working. I don't know any user. However, I still think that Petri nets are the way to go if you need to run some kidn of state machine. Especially event based POE programs could profit. So if you are interested, contact me and I will help.
the available code in the cvs is just work in progress. the java code for the editor will be released later. if you are interested and want to participate in testing please contact me.