CHECK DUPLICATE CONTENTS:

1.CopyScape:

This the the best website to check your Duplicate Contents free of cost as well as chargeable. Here you would get a box where you have to just enter the URL of your website and click GO. All the things would be done by this. You would get the 10 matching results of your contents free of cost. To use the full services you have to upgrade to premium account. You can check as much as websites you want but only get 10 matching content results in free version.

2.DMCA:

This one is also provides free and good service to check duplicate contents. It is better that copyscape in such a manner because it don't just provide 10 results it provides the all results free. But it allows only 2 free scans per IP. You can get the pro version by paying 10$ per month to 100$ per year. Its pro version always watch for the contents if someone copy then it take the action within 24hr and gets back your content unique.

3.Plagiarisma:

It is also a duplicate content checker which is free of cost. Here you can check your website content. Different files like TXT, HTML, RTF, DOC, DOCX, ODT, PDF. It also provides a free Plagiarism Software.

4.Plagiarismdetect:

This is also a paid as well as chargeable service. Which Checks a large number of pages with improved accuracy for only $0,50 per page. It provides original Multi-Layered technology with SMART scanning. Parts of texts that contain plagiarism are highlighted in 2 different ways.

5.Articlechecker:

This is also a free website to check article and website pages for duplication. It provides the service to check link as well as texts. It checks the link from two search engines Google and Yahoo.

SOME OTHER FREE WEBSITES TO CHECK DUPLICATE CONTENTS:

http://www.virante.com/

http://plagiarismchecker.com/

http://www.duplichecker.com/