Hi Henrique, much to my surprise gretl.org indeed does not seem to be taken (according to a whois search). I think it's a good idea to register it! If you run into any trouble with that, let us/me know.Dear Allin, I'm not proposing to create a new Portuguese website outside Sourceforge. My ideia is just to create a new domain:
http://gretl.org/ (NEW)