| Program | Role | Version | Date |
|---|---|---|---|
| FreeSTyle Manager | Programmer | 2.3 | 1992-01-01 |
| Virus (Adventure) | Programmer | 1.1 | 1992-01-01 |
| GfA-Dialog | Programmer | 1990-03-01 | |
| OK Chicago | Programmer | 1990-01-01 | |
| Push | Programmer | 1988-01-01 | |
| FreeSTyle Label Designer | Programmer | 1.3 | |
| myCs | Programmer | ||
| Ritter der Lüfte | Programmer | 2.0 | |
| Super-Grips | Programmer | ||
| Uni-Install | Programmer | 0.99 |
