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