| Type | Title | Year | Publisher |
|---|---|---|---|
| Sinclair ZX-81 cass. | 🟩 Fastload | 1982 | IPS, Inc. [International Publishing & Soft.] |
| Sinclair ZX-81 cass. | 🟩 High-Res Package | 1983 | IPS, Inc. [International Publishing & Soft.] |
| Sinclair ZX-81 cass. | 🟩 Personal Financial Planning Pack Model Z53 | 1983 | IPS, Inc. [International Publishing & Soft.] |
| Sinclair ZX-81 cass. | 🟩 ZX Assembler | 1982 | IPS, Inc. [International Publishing & Soft.] |
| Sinclair ZX-81 cass. | 🟩 ZX Forth | 1982 | IPS, Inc. [International Publishing & Soft.] |