Microsoft Multiplan
A spreadsheet from Microsoft originally developed for CP/M and released in 1982. It eventually got ported to a host of 8 bit computers and a few 16 bit ones in the form of DOS, Burroughs B-20 and the Apple Macintosh. While well received on the 8bit platforms as being more advanced than what was currently available when it was released, it bombed on the IBM PC and other more powerful computers as it was considered seriously underpowered, the only exception being The Apple Mac, but Microsoft co-founder Bill Gates had made an exclusivity deal with Apple so for over a year it was the only spreadsheet available for the platform.