Reply To: SmartMusic Alternative
MusicFirst has a product called PracticeFirst which is gearing up for release this fall. I haven’t used it (have only taken a look at the demos), but it seems like it mirrors much of SmartMusic’s functionality.
The new printings of Essential Elements also have an online component (you can access with an older book, though, too). It doesn’t give you feedback about right and wrong notes and rhythms, but it has some helpful tools.