Used TwinMarker for Windows?
The Download Now link will prompt a local download of the Firefox extension. To install the extension directly, open the file using your Firefox browser.
Editors’ Review
Download.com staff
Top Recommended Alternative
Pros
- Checks spelling and grammar errors
- Helps enhance learning skills
- Allows text import and export
- Copies text from web pages
- Writes text back to source page
Cons
- Grammar checking is server-side
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