MicroSoft Multiplan predates Excel by quite a few years.
https://en.wikipedia.org/wiki/Multiplan
Multiplan appeared on the first 16bit home computer, the Texas Instrument TI-99/4a in cartridge form. It ran under CP/M, Apple II, Microbee, Classic Mac OS, MS-DOS, Xenix, Commodore 64, CTOS, TI-99/4A, TRS-80, UNIX, Thomson, in fact a total of 100 platforms.
It was developed using a Microsoft proprietary p-code C compiler ( Discussed here:- http://www.memecentral.com/mylife.htm ) as part of a portability strategy that facilitated ports to systems
Lets not forget SuperCalc and Visicalc either.