Actually some of the early PCs -- i.e. before the IBM PC -- did not have floppy drives. The storage mechanism was cassette tape.

Ah yes, the TRS-80 Level 1 and 2. I had a Level 2 with tape until I splurged on the mighty expansion interface that increased RAM to 48K, plus I had a massive 90K floppy drive. I even had the video hack that allowed screen display of lower case, not just upper case. That was a HOT machine! I've actually still got it, waiting for it to be worth a fortune as it becomes a venerable antique. ;-)

For wordprocessing I had Scripsit because it allowed me to format text (bold, italic, font) by embedding control characters, but also because it auto-spanned documents to disk if they became too large for memory, an ability that clearly impressed me so much that I still ask for it 25 years later. ;-)