Recently I discovered an on-device grammar checker called Harper: https://writewithharper.com/

Right now I am trying to make a MarkEdit extension based on it.

We have recently introduced YAML front matter syntax highlighting and rendering support.

Explore the latest MarkEdit build along with the updated MarkEdit Preview extension for the new capabilities.

https://github.com/MarkEdit-app/MarkEdit/releases/tag/v1.30.0

https://github.com/MarkEdit-app/MarkEdit-preview/releases/tag/v1.6.0

I've received several complaints about the update alert before.

Going forward, app updates will appear as a menu bar item, so they won't interrupt your current tasks, unless you check for updates manually.

I hope this approach helps keep you more focused.

With the upcoming update, we’re improving MarkEdit’s integration with the file system, including:

- File autocomplete
- Finder extension for creating new files

v1.27.0 is now available: ready for macOS Tahoe with a fresh new look and Foundation Models support.

https://github.com/MarkEdit-app/MarkEdit/releases/tag/v1.27.0

Releasing MarkEdit v1.26.0: https://github.com/MarkEdit-app/MarkEdit/releases/tag/v1.26.0

In addition to general bug fixes and improvements for macOS Tahoe, we've enhanced the app to provide better support for custom themes.