Plagiarism is becoming easier to detect thanks to programs that allow instructors to compare papers to other sources using extensive databases. Some web sites require a paid membership or requires that one purchase software; even so, they are very useful in detecting plagiarism.
Some web sites one could use to catch plagiarism are:
Article Checker – A free program which checks for duplicate content using Google or Yahoo.
DOC Cop – A free service that offers the option of file check or web check. File check allows one to scan and compare a maximum of eight Microsoft Word or AdobePDF files of up to 100,000 words each against one another. Web Check allows one to put a web page, a Doc file, or a PDF file through a duplicity check on the web. Web Check, however, is limited to a max of 550 words.
Plagiarism.org-- Plagarism.org provides resources and information about Plagiarism. It links to Turnitin, which is an originality checking tool.
Plagiarism Checker – A free online service that searches using a few phrases taken from different parts of the document.
Turn It In – A paid service which cross checks over 150 million archived student papers, 90,000 journals, periodicals and books and more.
One can also select a passage of text and crosscheck it in Google or a different search engine.