solve 1st species counterpoint for any cantus firmus
User enters a cantus firmus, chooses a mode and program will attempt to solve based on 16th century contrapuntal rules. Rules can be switched on/off. Playback is enabled and cantus can be saved and re-solved.
They give you a Purchase button but when you click it you are taken to their web site and then you have to poke around for awhile until you finally find the place to pay. And then they don't email you the serial number right away. I still don't know if they're going to email it or snailmail it (1) because there is NO information on their payment page for how they plan to deliver the serial number to you. I can't believe they would sell software online and not be able to deliver the serial number to unlock the software on payment right away. I've never heard of that before - they don't come off as very professional.
Summary
A good program - they might sell more copies if they didn't make it such a pain to pay for it and make you wait to get the serial number.