Side by side
Korr vs Lexicon
Both stand on grammar checkers. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan ExtensionWebWindows
Korr offers local text correction across a website, extension, and Windows app, with review controls and a device-stored personal dictionary. Its language coverage depends on which version you use, and the terms do not promise availability.
Visit Korr Free plan ExtensionLinuxMac+1
Choose Lexicon if you want a free desktop editor with local proofreading, flexible document export and optional local-model rewriting. Look elsewhere if you need a stable browser extension, Google Docs support or signed desktop builds.
Visit LexiconThe facts
| Korr | Lexicon | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | Extension, Web, Windows | Extension, Linux, Mac, Windows |
| Lowest paid plan | Free or on request | Free or on request |
| Plans published | 1 | 1 |
| Maker | Korr | Not published |
| Website | korr.peekrapp.com | lexicon-writer.pages.dev |
| On grammar checkers | #22 of 88 | #18 of 88 |
Korr: what it does well
- Free
- No account, subscription, or usage limit
- Processes text locally in the browser or computer
- Users can reject changes individually
- Works in Gmail, Slack, and Windows programs
What to know first
- Windows app supports only French and English
- No availability commitment is provided in the terms
- Publisher may modify, suspend, or discontinue the service
Lexicon: what it does well
- LanguageTool proofreading runs locally on the CPU.
- Includes templates for four writing styles.
- Can use local GGUF models for rewriting.
- Imports four document formats and exports four formats.
- Drafts and settings stay in the local user profile.
What to know first
- The browser extension is beta and requires the desktop app running.
- The extension does not support Google Docs.
- Windows builds are not code-signed; macOS builds are not notarized.