The following are sites which are "free". Some may require registration, but there is no charge. They offer tips, instructions, and links to sites which either filter or are a source of plagiarism. You will also see here several sites offering free software which you can download and use to scan your own students' work.
DetectaCopias
< http://www.dcc.uchile.cl/~rmeza/proyectos/detectaCopias/index.html
>
Spanish language service with downloadable software for comparing texts.
DOC Cop
< http://www.doccop.com
>
Australian service with fast turn-around, capable of comparing multiple documents at a time again each other or against the Web.
Glatt Plagiarism Services, Inc .
< http://www.plagiarism.com/self.detect.htm
>
This site offers a free self-detect test for students to check their own material for plagiarism.
Jplag
< http://www.jplag.de
>
German based service specializing in programming code, but also accommodates plain text documents.
For teachers only! You must register to use.
Noodletools
< http://www.noodletools.com
>
Site offers a number of free resources for teaching proper citation and quotation styles.
The Plagiarism Resource Site
< http://www.plagiarism.phys.virginia.edu/home.html
>
Free software for download developed by Professor Louis A. Bloomfield to detect similarities between texts turned in by his physics students. Very effective at identifying similar phrases in works being compared. Several versions available for download.
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About.com > Education > Secondary School Educators > Cheating and Education
< http://7-12educators.about.com/cs/cheating/index.htm?terms=plagiarism >
An annotated list of links about plagiarism, a result of the designated search.
Cut-and-Paste Plagiarism: Preventing, Detecting and Tracking Online Plagiarism
< http://alexia.lis.uiuc.edu/~janicke/plagiary.htm
>
Hot linked essay on the titled topic.
Downers Grove North High School Library
< http://www.csd99.k12.il.us/north/library/plagiarism.htm
>

Articulate and comprehensive guide for teachers concerned with the issue. Provides tips for detecting, training aids, links to paper mills, search services, and articles about plagiarism.
EasyBib.com
< http://www.easybib.com
>
Great free site for learning how or actually creating citations online which can be printed out or saved to disk. Offers MLA and APA formats for inexpensive student subscription or administrator subscription services.
Ethics 101: Cheating, Plagiarism, Site Evaluation -- Copyright and Your Students
<http://www.kalama.com/~zimba/plag&cheat.htm>
Great list of sites that are useful for educating students about the ethics involved with copyrights, cheating, and plagiarism. (Formerly "Librarians as an Integration Partner".)
Noodletools
< http://www.noodletools.com
>
Site offers a number of free resources for teaching proper citation and quotation styles.
Faculty Guide to Cyber-Plagiarism
< http://www.library.ualberta.ca/guides/plagiarism/ >
Website full of resources and information designed for the faculty at University of Alberta (Canada).
Very in-depth and easy to use. Very helpful!
The New Plagiarism: Seven Antidotes to Prevent Highway Robbery in an Electronic Age *
< http://www.fno.org/may98/cov98may.html
>
This article provides teachers with methods to discourage plagiarism. Among
them: "Discourage 'Trivial Pursuits,'" that is, encourage students to solve problems, instead of sending them on "information scavenger hunts." Source: Jamie McKenzie, From Now On, vol. 7 no. 8, May
1998.
Plagiarism Prevention Zone
< http://college.hmco.com/english/plagiarism_prevention.html
>
Houghton Mifflin's learning modules on plagiarism. Ten short tutorials which explain things like, "Why not Plagiarize?", "How and When to Quote", or "Why Plagiarism Should Matter to You". Also a jumping off point for other very useful interactive resources (under
.../english/resources/elibrary/1e/students/).
Plagiarism Resource Site at Charlottesville, VA
< http://www.plagiarism.phys.virginia.edu/ >
Very informative and intriguing site giving access to free software to download, other sites for educating oneself on the problems of plagiarism, and documentation for at least one case of proposed plagiarism outside of the University of Virginia. Created by Physics Professor Louis A. Bloomfield in response to discovering a wide-spread case of on campus plagiarism in May of 2001.
Plagiarism Theme Page
< http://www.cln.org/themes/plagiarism.html
>
More links to links about preventing, detecting, and tracking online plagiarism.
Plagiarized.com
< http://www.plagiarized.com/ >
"The purpose of this site is to help teachers or professors (or even parents) determine if a given piece of

academic work has been obtained from the Internet." menu
These sites have a fee or charge for service. They indicate their service is a deterrent to student plagiarism. The process, in some cases, requires students to submit their own work to the online website. The work is then compared to the company's own database of documents for similarities. A report on each student's work is e-mailed to the instructor, identifying what is plagiarized. Any work submitted to the service is kept as part of the master database for future comparisons. In other cases, the site offers software for purchase and use in schools to teach what is plagiarism and how to detect and/or prevent it.
EVE2 < http://www.canexus.com/eve/ >
Integriguard < http://www.integriguard.com
>
Glatt Plagiarism Services, Inc . < http://www.plagiarism.com/ >
My Drop Box < http://www.mydropbox.com/ >
NoodleBib 6 < http://www.noodletools.com/ >
Plagiarism.org < http://www.plagiarism.org
>
Turn It In < http://www.turnitin.com/ > menu
Cheathouse.com [House of Cheat] *
< http://www.cheathouse.com/ >
One of the more "notorious paper mills"
GradeSaver
< http://www.gradesaver.com
>
This is an online editing and proofreading service for students, designed to assist them to improve their own papers. Also on the site are copyrighted literature study guides (ClassicNotes) written by Harvard students. The site editors offer "a complete grammatical, substantive, technical, and stylistic revision of your essay or document with a focus on the academic environment." Students may be tempted to ignore the posted warnings against plagiarism.
123 Help Me
< http://www.123helpme.com
>
A website designed to "help" students.
Other People's Papers
< http://www.oppapers.com
>

Offers free essays and papers. Has some offensive rap music lyrics playing when you arrive at the site.
The Paper Store *
< http://www.allpapers.com/intro.htm
>
Again, one more "paper mill".
PinkMonkey.com
< http://www.pinkmonkey.com
>
According to the header, this is "The leading provider of Literature Summaries on the Internet." As such, it might be a source of many plagiarized items.
S/L/A/S/H/D/O/C/S/
< http://www.slashdocs.com
>
Not exactly designed to offer resources for the taking, but could easily be misused. This site asks people to upload documents as a web depository for the under used documents. The site owners offer to get these documents into search engines so the authors can get more exposure to their creations. Site also indicates the materials are copyrighted and not free for the taking.
School Sucks *
< http://www.schoolsucks.com/search >
O ne more in a myriad of "paper mills" on the web. (This one may require some "digging" to get to the actual papers.)
Sparknotes.com
< http://www.sparknotes.com
>
Students often obtain material from this site and turn it in as their own. Study guides and full text documents pose a great temptation.
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Items marked with an asterisk "*" are taken from "The Librarian's Internet (formerly "Surf For"): The e-Plagiarism Plague.", by Gail Junion-Metz. School Library Journal, September, 2000 .
Items marked with a double asterisk "**" are referred to in "Web of Deceit" by Walter Minkel. This article gives a broad and clear look at the problem of plagiarism today. School Library Journal, April,
2002.
Compiled by Jane Sharka. This site will no longer be updated or maintained as of June 1, 2007.
The author is retired from the school at which this site is posted.