Recall the the old Wordstar / Calcstar duo? Best thing running on CP/M at the time.
I ran WordStar, SuperCalc, dBase II, and MS BASIC on an Osborne with CP/M. When I went over to MS-DOS, I switched to Word Perfect, Quattro Pro, Paradox, and Turbo Pascal. Then came Windows with MS Office, C and C#. Now, I use a Mac with MS Office and Swift.