| TYPE | DATE | Language | OEM | Media | Type | Manual | License |
| D.R. DOSplus 1.2 | 1986 | Italian | Amstrad | 1 | 5.25" FD | 1 | 1 |
| D.R. DOS 6.0 | 27/3/92 | Italian | Olidata | 2 | 3.5" FD | 1 | |
| D.R. GEM 2.0 | 24/6/87 | Italian | Amstrad | 1 | 5.25" FD | 1 | 1 |
| IBM OS/2 2.0 | 1992 | Italian | (IBM) | 2 | 2 | ||
| IBM PC-DOS 3.30 | 18/3/87 | Italian | (IBM) | 5 | 3.5" FD | 5 | 5 |
| 5 | 5.25" FD | ||||||
| IBM PC-DOS 5.0 | 14/8/91 | Italian | IBM | 1 | 3.5" FD | 5 | 5 |
| IBM PC-DOS 5.02 | 1992 | Italian | IBM | 1 | |||
| Microsoft MS-DOS 3 | 1985 | Italian | Olivetti | 1 | |||
| Microsoft MS-DOS 3.2 | 10/3/87 | Italian | Amstrad | 1 | 5.25" FD | 1 | |
| Microsoft MS-DOS 3.22 | 7/7/86 | Italian | Asem | 1 | 5.25" FD | 1 | |
| Microsoft MS-DOS 3.3 | 26/4/88 | Italian | Asem | 1 | 5.25" FD | 1 | |
| Intercomp | 1 | 3.5" FD | |||||
| Zenith | 1 | 3.5" FD | |||||
| Microsoft MS-DOS 4.01 | 20/6/89 | Italian | Olivetti | 1 | 3.5" FD | 1 | 1 |
| Microsoft MS-DOS 5.0 | 12/7/91 | Italian | (update) | 1 | 3.5" FD | ||
| Zenith | 1 | 3.5" FD | |||||
| Microsoft MS-DOS 6.0 | 10/3/93 | English (US) | (oem) | 4 | 3.5" FD | 8 | 8 |
| Microsoft MS-DOS 6.22 | 31/5/94 | English (US) | (oem) | 1 | 1 | ||
| German | 4 | 3.5" FD | 10 | 10 | |||
| Microsoft Windows/286 2.10 | 7/9/88 | Italian | 1 | 5.25" FD | 1 | ||
| Microsoft Windows 3.0 | 27/11/90 | Italian | Intercomp | 2 | 5.25" FD | 2 | |
| Memorex Telex | 1 | 3.5" FD | |||||
| Microsoft Windows 3.1 | 21/3/92 | Italian | Olivetti | 1 | 3.5" FD | 1 | |
| Microsoft Windows 3.11 | 11/11/93 | Italian | 1 | 1 | |||
| Microsoft Windows 3.11 + MS-DOS 6.22 | 31/5/94 | Spanish | (oem) | 3 | 3.5" FD | 3 | 3 |
| Microsoft Windows 95 | 24/8/95 | Italian | (oem) | 1 | 3.5" FD | 3 | 3 |
| unk. | Olivetti | 1 | |||||
| Microsoft Windows 95 (SR2) | 24/8/96 | Italian | (oem) | 1 | 3.5" FD | 3 | 3 |
| 30/1/98 | German | 4 | CDROM | 6 | 6 | ||
| Microsoft Windows 98 | 15/5/98 | Italian | (oem) | 2 | CDROM | 2 | 2 |
| Microsoft Windows 98 S.E. | 1999 | Italian | (oem) | 3 | 3 | ||
| Microsoft Windows NT Workstation 4.0 | 25/11/96 | Italian | (oem) | 2 | CDROM | 2 | 2 |
| Microsoft Windows NT Workstation 4.0 (+SP4) | 25/11/96 | Italian | (oem) | 1 | CDROM | 1 | 1 |
| Microsoft Windows NT Workstation 4.0 SP6 | 25/11/96 | Italian | Siemens | 1 | CDROM | ||
| Microsoft Windows 2000 Professional SP2 | 8/5/01 | Italian | (oem) | 1 | CDROM | 2 | 1 |
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