RightWriter 3.1 for Macintosh
Released in 1990 by RightSoft Inc.
For Macintosh m68k
Image quality: Disk appears unused

RightWriter is a grammar / structure checking utility. You can feed 
it a document, and it will produce a marked up copy listing high 
level critiques such as readability, delivery strength, and jargon. 
It competed with Grammatik, but RightWriter generally produced 
superior results.

Note: The disk labile suggests this is a PC version, but it is the
Mac version.

Archive includes one 3.5" 800k Macintosh floppy disk image.