What AI says about Harper

Since Jul 5Updated Oct 28, 2026Based on 25,216 AI responsesReviewed by

How we measure

writewithharper.com

AI summary

Harper is a free, open-source English grammar checker that runs locally on a user's device to provide grammar suggestions.

Mentioned in

<1%

of AI answers about Harper and its rivals

The market map

Grammar and Writing Checker Tools

Mentioned in

  1. #1GrammarlyMentioned in 74%Avg. position 3.8
  2. #2tiedProWritingAidMentioned in 64%Avg. position 3.7
  3. #2tiedLanguageToolMentioned in 63%Avg. position 4.3
  4. #4PerfectItMentioned in 40%Avg. position 3.0
  5. #5tiedHemingway EditorMentioned in 17%Avg. position 5.2
  6. #5tiedAcrolinxMentioned in 13%Avg. position 3.7
  7. #7tiedWriterMentioned in 13%Avg. position 3.2
  8. #7tiedMicrosoftMentioned in 13%Avg. position 4.7
  9. #12tiedTrinkaMentioned in 8%Avg. position 4.2
  10. #12tiedQuillBotMentioned in 7%Avg. position 5.8
  11. #12tiedGoogle DocsMentioned in 6%Avg. position 5.0
  12. #15tiedLitera CheckMentioned in 5%Avg. position 3.6
  13. #15tiededitGPTMentioned in 4%Avg. position 3.5
  14. #15tiedScribbrMentioned in 4%Avg. position 6.1
  15. #20tiedHarperMentioned in 2%Avg. position 3.2

Where Harper ranks in AI

MarketRank · Mentioned in

Topics where AI mentions Harper

TopicMentioned in · on this topic

Harper in AI’s own words

Question: Which proofreading platforms offer regional data processing zero-retention controls and offline options for confidential documents?

Google AI ModeSep 19, 2026

Harper (Local/Offline Open-Source Engine) - Zero-Retention & Processing: Because it is a 100% local, privacy-first engine, no data retention policies are even needed—no text ever leaves your machine.

Google AI ModeAug 30, 2026

Harper (Open-Source / Local Rust Engine) - The Control: A fast, privacy-first, open-source grammar checker written in Rust that operates completely offline without an internet connection.

Google AI ModeAsk Google AI Mode yourself (opens in a new tab)ChatGPTAsk ChatGPT yourself (opens in a new tab)

Question: I love the '90s minimalism look. What is the best brand for simple slip dresses and high-waisted, straight-leg jeans?

ChatGPTAug 11, 2026

The Harper is a particularly clean option: high waist, straight leg, dark indigo, with just a little stretch.

ChatGPTAsk ChatGPT yourself (opens in a new tab)Google AI ModeAsk Google AI Mode yourself (opens in a new tab)

How prominently AI mentions Harper

Each engine’s share of its own answers across Harper’s markets

  • ChatGPT<1%
  • Google AI Mode<1%

Other brands in Durable Performance Fabric Sofas

Sources AI cites

writewithharper.com 30%Other sites 70%

The page AI cites most for Harper

writewithharper.com faviconwritewithharper.comHome page (opens in a new tab)27%of answers