Automattic/harper

Offline, privacy-first grammar checker. Fast, open-source, Rust-powered

Developer toolsRust#developer-tools#english-language#grammar-checker#rust#webassembly

3.2 Breakout Magnitude out of 10. Star growth looks organic. Data as of September 19, 2026.

About the project

Offline English grammar checker written in Rust: runs locally without sending text to servers, fast and memory-efficient. Available as WebAssembly, a Chrome extension, an LSP server, and a Node.js library.

Useful for

Check grammar in VS Code, Neovim, or Obsidian via harper-ls without sending text anywhere
Embed grammar checking into a web editor using harper.js or WebAssembly
Install the Chrome extension to check text directly in the browser

README summarized by DeepSeek V4.1 Flash. Details may be inaccurate.

Why it’s trending

17 stars so far today, about 55 expected by the end of the day.
Over the last two days the pace is 1.9× that of the previous week and a half.
GitHub Trending Rust today: #6, +97 stars.
About 12 forks a day — people are taking the code.

Stars per day

Bars are daily stars, the line is the usual pace. Red marks spike days.

Numbers

Total stars: 15,638
Stars in a day: 55
Forks: 647
Issues and pull requests: 4,310
Watchers: 44
Language: Rust
License: Apache-2.0
Latest release: v2.11.0 · September 16, 2026
Created: October 22, 2023
Last push: September 18, 2026

Star trust

Growth looks organic: forks and discussion are in line with active projects, and stars arrive unevenly, the way people give them.

These are heuristics, not a verdict: we judge by the repository’s behavior, not by a list of stargazers.

Spotted in

September 19, 2026GitHub Trending Rust today: #6, +97 stars

README badge

Paste it into your README — the badge shows the current magnitude and links to this page.

[![Seismograph](https://gitnova.dev/badge/Automattic/harper.svg?lang=en)](https://gitnova.dev/en/r/Automattic/harper)

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