Exactly what I needed.

Fantastic grammatical add-on from amateur English learners to professional wordsmiths. The complete lack of bloated AI features, paywalls, and major issues makes this a must-have for most Firefox users. Hats off to the developers and I greatly appreciate the work involved to create this brilliant tool!

After LanguageTool got into bed with AI, that was it for me. Having this run locally to run spell check is just what I need.

Language tool is now payware only, I just wanted something to check my spelling and grammar in message and form fields and this does the job 100% and better.

using for week, works great....

This project is both highly effective and beautiful! Thank you for offering a tool that checks every box: free, form, and function!

LanguageTools told me that their browser extension is now for premium members only. After reading that news, LT was removed. The search for a replacement lead me to Harper. After trying Harper for 5 minutes, it was obvious that Harper is the perfect LT replacement. Thank you Elijah!

So far so good. Love it, but I was testing it just for an hour, so I'll edit my review if anything pops up.

I recently started using Harper in my browsers, but also in Visual Studio Code. It works very well, and I like the focus on privacy. Thanks Elijah!

One of THE MOST awesome and useful add-ons ever.
Fast, reliable and private!

Kudos for your great work, Elijah Potter.

Was looking for a non-ai grammar checker. Thank you!

Simply excellent! So much faster and better than garbage AI slop grammarly