Openly VS write-good

They don't mention that can write the rules yourself and also pick and choose from existing rules from github.

There is an attempt to build and open source version of grammarly using vale rules here.

https://github.com/testthedocs/Openly

Check out Openly (https://github.com/testthedocs/Openly) -- it's a "Vale linter style that attempts to emulate some features of the commercial, and closed source, Grammarly."

Grammarly Clone in Vale

There's even a project of someone trying to simulate Grammarly, although it looks a bit dead right now: https://github.com/testthedocs/Openly

If you're using markdown, as a shameless plug, ThiefMD supports basic grammar checking, spell check, and English linting (passive voice detection, weasel words).

I like to use write-good[0] - it takes a glob and prints suggestions to stdout.

[0]: https://github.com/btford/write-good

write-good

btford/write-good – A naive linter for English prose.

Like most markdown editors, we have typewriter scrolling, focus mode, and live preview. Code Blocks support syntax highlighting for a majority of languages. We also have a selection of themes and support CSS for export formatting. Some of our secret sauce includes write-good suggestions based on btford's write-good, which we ported to Vala.