I like the simplicity of notecards for tracking tasks, so this looks like it might be a good fit for me.
Don't remember seeing it before.
According to the wayback machine on archive.org, it looks like it started availability last December. According to a comment left by the vendor in a previous BDJ offer, they also develop "Perfect Table Plan" software (http://www.perfecttableplan.com/
). Perfect Table Plan looks like a rather specialized bit of software, but the website might give an indication of how well HyperPlan might be supported. It's a good sign that several of the requests made in comments to the last BDJ offer for HyperPlan have apparently already been implemented - particularly clickable links in the notes. Actually, the old comment stream on BDJ seems to be very favorable (and I think that BDJ is often a tough crowd), with the developer also being very engaged in the discussion.
I look forward to any opinions you might form - I'm not sure if I'll get much chance to try it out. If it's any good, $20 for a per-user (limited to 5 machines, but cross PC/Mac) license would be a nice bargain. But software like this is really sensitive to matching how one thinks and wants to move things around, so it's really impossible to know if it's a good fit without trying it out.