Last checked October 15, 2026
Vale
Vale checks prose against rules you write, usually in a docs repository. It does not correct grammar in a browser the way Grammarly does. Use it when the problem is an inconsistent style guide, not a red squiggle in email.
Open sourceMITDevelopersWriters
MacWindowsLinux
Free tier
The CLI is free.
Hosted
No hosted price recorded.
Self-host
A local command-line tool. Nothing to host.
Drop-in scores
Sources checked
https://ditchly.co/software/vale