There was a suite of software developed for Unix in the late 80s called "The Writer's Workbench", described in Wikipedia as "perhaps the earliest grammar checke

There was a suite of software developed for Unix in the late 80s called "The Writer's Workbench", described in Wikipedia as "perhaps the earliest grammar checker to receive wide usage on Unix systems." https://en.wikipedia.org/wiki/Writer's_Workbench https://en.wikipedia.org/wiki/Writer's_Workbench There is another program named "Writers Workbench" which is available as an online version and as a plugin for Microsoft Word. https://www.writersworkbench.com/ https://www.writersworkbench.com/ It wasn't clear to me whether the "Writer's Workbench" was derived from, or inspired by, the earlier Unix software.