Copyscape

When it comes to a plagiarism checker tool that helps to detect duplicate articles, Copyscape would be recommended. It’s so easy to use as you can cut any text you want to examine into the toolbox. In using this tool, you’re required to pay a service fee of $0.05 only.

Search credits are sold here and it’s compulsory so far you’re a registered user. It simply implies that you must buy search credits whether you’re ready to search using this tool or not.

Its automated program helps to protect and audit a site. This program is known as Copysentry.

DupliChecker

With the DupliChecker tool, you can easily enter any text that you copied from a web page into the toolbox, enter the web address of any site you want to examine against plagiarism, or simply get a .txt file or document uploaded. While using the DupliChecker tool, you’re given access to cut and paste up to 1000 words and above for a search together once.

In using the Duplichecker tool, you’ll start/register first as a user. In order to gain unlimited access to those great features, you must become a fully-registered user, not just an anonymous one.

In as much as this particular tool checks every line of text and points to the lines across the text that are found duplicate, it’s said to be much more accurate and helpful than others.