# Automattic/harper

> 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.

- Magnitude: 2.1 out of 10 — Steady
- Stars: 17,285 total · +7 stars measured 2026-10-30, 00:20–10:11 UTC, ≈ 25 by evening
- Star trust: star growth looks organic
- Category: Developer tools · Language: Rust · License: Apache-2.0 · Created: 2023-10-22 · Last push: 2026-10-30
- GitHub: https://github.com/Automattic/harper · Homepage: https://writewithharper.com · Page: https://gitnova.dev/en/r/Automattic/harper

## 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

## Why it’s here

- Star-counter measurements on 2026-10-30 (UTC), 00:20–10:11: 17278 → 17285 stars (+7). This is the change over that interval.
- Estimated end-of-day forecast: about +25 stars, using observed gains and the previous day.
- Interest is fading: the two-day pace is 57% of the previous week and a half.

## Star trust

Star growth looks organic.

Star-trust labels are heuristics based on the repository’s behavior, not a check of every stargazer.

## Numbers

- Forks: 780
- Issues and pull requests: 4,635
- Watchers: 49
- Average over the last week: 36 per day
- Usual pace: 56 per day
- Latest release: v3.0.0 (2026-10-27)

## Stars per day, last 30 days (oldest → newest, today is partial)

2026-10-05 … 2026-11-03: 32, 34, 23, 18, 10, 30, 22, 35, 57, 37, 41, 114, 82, 77, 97, 84, 48, 66, 49, 30, 35, 32, 49, 43, 42, 1, None, None, None, None

## Magnitude by day, last 14 days

10-17 4.2, 10-18 3.9, 10-19 3.6, 10-20 4.2, 10-21 3.3, 10-22 2.7, 10-23 2.7, 10-24 2.4, 10-25 2.1, 10-26 2.1, 10-27 2.1, 10-28 2.3, 10-29 2.3, 10-30 2.2

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Magnitude (0–10) measures how fast and how unusually interest in a repository is growing right now. It is not a quality score.
Days are UTC. “So far today” is a fact; “expected by the end of the day” is a forecast.
Summaries and use cases are written by an LLM (DeepSeek V4.1 Flash) from the README and may be inaccurate: verify specific claims (benchmarks, speed, hardware) in the repository itself.
Data as of 2026-10-30 10:18 UTC, updated every 30 minutes.