Billed as "The most advanced online plagiarism detection service," Catch It First checks submitted documents against billions of web pages and generates what it calls an "originality report."
The Essay Verification Engine (EVE) Plagiarism Detection System generates reports that include the percentage of the paper that has been plagiarized along with an annotated copy that has all violations highlighted in red.
iThenticate claims to be the "leading provider of professional plagiarism detection and prevention technology." It compares written documents against a database of over 32 billion web pages and 125 million content items. iThenticate is actually developed by Turn It In.
Hosted by Blackboard and offered to its clients is the plagiarism prevention service called SafeAssign. In addition to checking for instances of copying, this service has features designed to educate students about plagiarism and the significance of proper citation of any borrowed content.
Using a proprietary algorithm, Turn It In compares documents submitted to several databases that consist of over 24 billion web pages, 250 million student papers, and leading library databases and publications. This service is very popular among educators and includes features such as OriginalityCheck, GradeMark, and PeerMark.