| Programm | Role | Version | Datum |
|---|---|---|---|
| Der kleine Professor | Programmierer | 2.10 | 1994-10-20 |
| Geometrie-Trainer | Programmierer | 1.2 | 1994-03-22 |
| Diaschau | Programmierer | 2.01 | 1993-03-21 |
| Welt | Programmierer | 2.40 | 1993-01-27 |
| Kritzel | Programmierer | 4.01 | 1992-08-20 |
| Mendel | Programmierer | 1.01 | 1990-08-01 |
| 10 Finger | Programmierer | 2.03 | 1990-02-27 |
| Erinner | Programmierer | 1989-11-10 | |
| 5 Spiele | Programmierer | 1989-01-01 | |
| Trickfilm | Programmierer | 1988-06-18 | |
| Autor | |||
| Katalog | Programmierer | ||
| Wunder | Programmierer |
