I am a German Psychologist working in a clinic for alcohol addiction and I have developed self help software for selfcoaching, setting goals, overcoming addiction ... The software is used in the clinic for helping the clients and could be bought by everybody per download for German speaking people on my webpage www.selbstmanagement.de.
My biggest success was ProEnergy. I used Multimedia Toolbook from 1995 until 2000 for developing ProEnergy. A few years ago I took vb.net to create a Windows Forms Project for developing my actual product StrategieTrainer. Since two month I started to migrate the whole project to WPF, which I like because of the nice possibilities for designing the UI and I hate it at the same time because of the unintuitivly language concepts.