Actually, Microsoft Word 1.00 for DOS was kind of funny, it could use mono CGA graphics mode, and make use of that new-fangled Microsoft Mouse. But it also worked in text mode for compatiblity with IBM MDA and color CGA. But aside from seeing bold and italics on the screen, it worked the same as in text mode.
The most friendly was probably Professional Write, most popular from the late 80s and early 90s was WordPerfect, most popular and cross-platform for the early 80s was WordStar. Popular shareware product was PCWrite.
Some other text-based word processors include VisiWord, Leading Edge Word Processing, XyWrite, Norton Textra Writer, Framework, IBM Writing Assistant (is actually PFS:Write), MultiMate, IBM DisplayWrite, Microsoft Works for DOS, Ability (used graphics mode), Bank Street Writer (there was an IBM version too), Perfect Writer, NewWord, PeachText 5000, VolksWriter, Lotus Symphony for DOS.... And those are just on the IBM PC platform.
Everybody had their own word processor!
If you go back earlier, there were many dedicated word processing workstations that ran only (or mostly) the vendors word processing software.