| Type | Title | Year | Publisher |
|---|---|---|---|
| Epson HX-20 Option ROM | 🟩 Forth | 1982 | HCCS Associates |
| Acorn BBC ROM | 🟩 JWB Forth Ver. 2 | 1983 | HCCS Associates |
| Acorn BBC ROM | 🟩 Logo-Forth | 1983 | HCCS Associates |
| Acorn BBC ROM | 🟩 Pascal-T | 1983 | HCCS Associates |
| Acorn BBC ROM | 🟩 Xcal | 1983 | HCCS Associates |