Harper: A Local, Open Source Grammarly Alternative for Neovim, Emacs & More

Опубликовано: 16 Май 2026
на канале: linkarzu
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Do you write a lot markdown in Neovim, and even though you have spell checking enabled, you would like to have a smart alternative similar to Grammarly that checks your spelling and grammar and offers suggestions?

I do have spell checking for neovim, but sometimes that's not enough, you need something smarter, that's when Harper comes in handy

If you know how to disable harper for specific paths in nvim-lspconfig, please let me know in the comments

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The text below is from their website:
Harper is an English grammar checker designed to be just right. You can think of it as an open-source alternative to Grammarly. I created it after years of dealing with the shortcomings of the competition.

Harper is completely private, in every sense of the word. Since Harper runs on-device, your data doesn't go anywhere you don't want it to. That means you have 100% certainty we don't violate your copyright by training large language models.

Harper is both available as a language server, and through WebAssembly, so you can get fantastic grammar checking anywhere you work.

That said, we take extra care to make sure the Visual Studio Code, Neovim, Zed and Obsidian integration is amazing. Since Harper runs on your devices, it's able to serve up suggestions in under 10 milliseconds. No network request, no massive language models, no fuss.

Harper is completely open source under the Apache-2.0 license.

00:00 - Harper demo
02:59 - disable rules
04:30 - move between hints
04:52 - what is harper
05:21 - IgnoreLinkTitle
07:18 - isolateEnglish
09:11 - diagnostics in hover window
09:55 - find the files in my dotfiles
10:28 - hover window config
11:52 - emacs helix zed vscode obsidian integration
12:14 - runs locally
12:32 - Parse lua comments
13:55 - harper_ls setup call
14:51 - Harper config options
15:38 - Install and setup harper through mason
16:30 - English only supported language
16:50 - Recommendations for multiple languages?
17:29 - Disable harper for specific paths?
18:21 - Push github changes
18:48 - Thank you for the help supporters
19:47 - GitHub changes in SketchyBar