Telephone
| Name | Version | Updated |
|---|---|---|
| Alphone | - | |
| Autodialer | 0.98 | - |
| Call Cost Stripper | 1.4 | - |
| Caller ID | 2.02 | - |
| ConfIstec | 14.01.1996 | |
| CoSTa | 2.21 | 12.10.1997 |
| DG-Telefon | - | |
| Dialer Pro | - | |
| Dialler | R5 | 27.07.1998 |
| Istec ST | 0.78 | - |
| Motel | 1.10 | - |
| Phone Voice | - | |
| Postbuster | 1.0 | - |
| Ring-Up | 2.3c | 01.04.1989 |
| ST-Phone (Telefonnachweis) | - | |
| STiKTime | 1.2 | - |
| T'Phone | - | |
| TelBo - Telephone Book | 1.06.06 | 01.01.2000 |
| Telecalc | 1.00 | 01.01.1996 |
| Telefon | 01.02.1988 | |
| Telephone Manager | 1.0 | 01.01.1989 |
| Terminal | - | |
| The Rowdy Dialer | 1.1 | 01.04.1993 |
| VOX-Mail | 0.99 | - |