The author of the mac-based GTD productivity application Actiontastic has decided to make an online sister (or borther) for his app, and announced today the launch of Actionatr. From what I saw on the brief announcement, I understand that Actionatr will flawlessly sync with Actiontastic. As far as I know this is the only offline/online pair of GTD applications that was made public. You cannot really see anything on Actionatr website but you can submit your email to be announced when things will become a little more visible than now. If Actionatr will keep the mean, lean and clean approach of Actiontastic, services like Nozbe or other newcomers will have serious work to do…