Copyscape is one of the most popular and famous tool to check the content if it is copied content or not.Moreover, Copyscape gives us a 15-20 pages to scan any web pages per month.Which means you can scan 15-20 pages of any site.I have collected top 5 alternatives which can helps you a lot.
Virante is also a best tool to find duplicate content.Virante was launched in 1990.
This tool also can tell you and helps you to find duplicate content in an easy way.It also offers a free service that helps in monitoring your RSS feed.CopyGator sends you notifications when someone copied your content.
3.Dupli Checker -
It is a free tool that helps you to detect duplicate content.The best thing in this site and tool, you don’t want to register your account.
This tool can helps you to find duplicate essays, dissertations and research papers in very easy way.You can check any whole essay or research paper for free without any word count limit.