Not really. I'm working on a Java version of GraphApp which
will allow you to port GraphApp programs to that language.
Java is really the only portable way to make programs work
correctly on several platforms via the World Wide Web.
GraphApp is designed to allow C programs to be portable and
internationalised. The focus is really not on inter-operability
with web browsers. So this is a secondary focus of this work,
and as such may be a while off yet.