We know that the Apple Computer Company and their products existed (as Scotty directly uses one in Star Trek IV - 'hello computer' and all that), therefore it stands to reason that Microsoft (having been founded a year earlier) also existed.Sadly Star Trek's PoD is far enough back that Microsoft never became a thing, so no Excel. I imagine that they have a spreadsheet program of some sort, but it's probably some kind of LCARS weirdness with lots of unlabeled buttons.