Viper

If you write web content or upload your writing on the Internet, it's possible that at some point you've been unpleasantly surprised to find that someone has copied your work.

However, it's not always easy to find the copy, since the document in question might be camouflaged, or not indexed in search engines at all.

That's where Viper comes in. This tool allows you to search the web to locate texts with significant similarities to your own.

Viper isn't just for searching documents on the Internet; it can also search within a local network to eliminate duplicate files.

The program supports TXT, DOC, RTF, and HTML file formats.