Automattic / harper
git clone https://github.com/Automattic/harper.git
v2.13.0 · 16d ago
Offline English grammar checker written in Rust, with editor integrations and a WebAssembly build for the browser.
Why you might care
Runs entirely on your machine, so text is never sent to a server, and lints documents in milliseconds with a small memory footprint. Useful as a privacy-respecting alternative to Grammarly or LanguageTool, and can be embedded via harper.js or used through editor plugins.
+24
stars, 24h · #2,029
+228
stars, 7 days · #1,276
+~1.1k
stars, 30 days · #962
17k
★ total · +1% this week
788
forks · 1.0k open issues
Star history (as recorded here)
LanguageRust
LicenseApache-2.0
Created2023-10-22 (3y ago)
Last push1d ago
Watchers49
OwnerOrganization
Seen on GitHub Trending
- 2026-10-27 — #17 weekly in rust · +408 ★
- 2026-10-26 — #7 weekly in rust · +441 ★
- 2026-10-25 — #9 weekly in rust · +491 ★
GitHub topics
Links
- GitHub: github.com/Automattic/harper
- Homepage: https://writewithharper.com
- Releases · Issues · Hacker News mentions
README
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Blurb generated by claude-haiku-5-5 6d ago. Star deltas marked ~ are extrapolated from partial history.