# Harper vs Microsoft Editor

Source: https://listme.name/compare/harper-vs-microsoft-editor
Framed by the ranking: https://listme.name/best/grammar-and-proofreading-tools

| | Harper | Microsoft Editor |
|---|---|---|
| Score | 89.5 | 86.5 |
| Rank | #3 | #5 |
| Price | Free and open source | Free plan, paid upgrades |
| Best for | Private, free grammar checks on your own device | Checking grammar inside Word and Outlook on the web |
| Where checks run | On your device, in browsers and editors | Word and Outlook for the web |
| Rewrites and paraphrasing | None; no AI model in the loop | Shorter wording suggestions |
| Style guidance | Grammar and spelling only | Clarity and conciseness checks |

Free, Apache-2.0 open source, with checks that run on your device. It covers grammar and spelling only, and its desktop app is listed for macOS. Built into Word and Outlook for the web, with a free grammar checker. Its full set of options is tied to a Microsoft 365 subscription, and it works only in Microsoft's apps.