BetaSoft was the one-man software house run by Dr Andrew Wright.
- BetaDOS, an improved DOS for the +D and DISCiPLE, extending beyond GDOS and G+DOS.
- Beta BASIC, a set of extensions to Sinclair BASIC for the ZX Spectrum.
- Master DOS, an improved DOS for the SAM Coupé compared to SAMDOS.
- SAM BASIC, the ROM of the SAM Coupé.
- Master BASIC, a set of extensions to SAM BASIC for the SAM Coupé.