* [[Speech]] (Symbos software)
* [[Speech!]] (Superior Software) (advert/quiz on ACU 86-09, page 49)
These programs use pre-recorded allophones, unlike as with the hardware based [[SP0256]] speech synthesizer chip, the allophones aren't computed an the fly. However, the overall result is the same: One can combine allophones to produce any kind of words and sentences, the software solution requires more memory and more CPU load though.