| Type ▼ | Name | Year ▼ | Publisher ▼ |
|---|---|---|---|
| Sharp MZ-700 cass. |  Interpreter PASCAL SP-4015 | 198? | Unknown |
| Compucolor II disk | Intro to Soundware | 19?? | Unknown |
| Compucolor II disk | Inventory | 19?? | Unknown |
| Dick Smith Super-80 cass. | Investment Analysis Model 055L1 | 198? | Unknown |
| Sharp Wizard series cart. | Investment Planner Model IQ-722M | 198? | Unknown |
| Compucolor II disk | Invoice Order | 19?? | Unknown |
| Commodore SuperPET disk | ISPUG Master Telecom Disk | 198? | Unknown |
| Hitachi MB-6890 (BM-LIII) disk | Japanese Word Processor | 1985 | Unknown |
| Vending Machine | Jim Cigarren-Automat | 189? | Unknown |
| Amstrad CPC 464 disk | JL-Copy Utilities Cracked | 1993 | Unknown |
| Kodak Photo CD | Johannes Paulus II | 199? | Unknown |
| Working Model | Jolly Jack | 19?? | Unknown |
| Working Model | Jolson Sings | 1948 | Unknown |
| Acorn Atom ROM | JosBox | 198? | Unknown |
| Dragon cass. | K3 Fractals | 2013 | Unknown |
| Dragon disk | K3 Fractals | 2013 | Unknown |
| Viewer | Kaleidoskop-Automat | 189? | Unknown |
| PEL Varazdin Orao cass. | Kalkulator | 19?? | Unknown |
| Musical Instrument | Kalliope Model 109 | 189? | Unknown |
| Musical Instrument | Kalliope Model 156 | 189? | Unknown |
| Musical Instrument | Kalliope Model 160 | 189? | Unknown |
| Musical Instrument | Kalliope Model 90 | 189? | Unknown |
| Sony PlayStation CD | Karat PS PS2-you Pro Action Replay CDX2 Model KRTCDX2 | 200? | Unknown |
| Sony PlayStation CD | Karat PS1-you Pro Action Replay CDX3 | 2002 | Unknown |
| Kodak Photo CD | Kawasaki - 1999 Good Times Photo CD | 199? | Unknown |
| Videoton TVC disk | Kazetta-Floppy Választó | 198? | Unknown |
| Sony PlayStation CD | Keitai Henshuu Model PBPX-95013 | 2001 | Unknown |
| TIKI-100 disk | Kermit-80 Ver.4 | 198? | Unknown |
| Acorn BBC ROM | Kevin's Rip-off ROM Ver. 1.00 | 1985 | Unknown |
| Working Model | Kill Tilly | 1648 | Unknown |
| Acorn BBC ROM | Kmon | 198? | Unknown |
| Sharp MZ-700 cass. | Knight's MZ-700 Forth Modified | 198? | Unknown |
| TIKI-100 disk | Kommunikasjonsprogram | 198? | Unknown |
| PEL Varazdin Orao cass. | Konverzija | 19?? | Unknown |
| Kodak Photo CD | Kosuke Fujishima World - Megami Kourin - Ah! My Goddess Special Vol. 1 | 199? | Unknown |
| TIKI-100 disk | KP/M GBIB | 198? | Unknown |
| Commodore PET ROM | KRAM Ver.2 | 198? | Unknown |
| TIKI-100 disk | Kryssord Generator | 198? | Unknown |
| TIKI-100 disk | KUD Programmepakke | 198? | Unknown |
| Luxor ABC 80 disk | Kundregister | 198? | Unknown |