Used Dupe Checker 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 highlighted text against directories
- Checks highlighted text against files
- Operates on your hard drive
Cons
- First release, potential for undiscovered issues
- Limited functionality beyond text checking
