The Plagiarism Resource Center at the University of Virginia - Site provides free software to detect plagiarism.
eTBLAST - a text similarity engine, which accepts a query and then compares it to a collection of other text, especially Medline. A variety of post-processors analyze the "hits" to provide added value to the user. Applications include reference searches, novelty assessment and publication ethics.
Deja vu - A database of highly similar citations identified by eTBLAST. The database includes over 70,000 pairs of citations and notes from manual inspection of some full text article pairs.
Comments are Welcome:
Simply email ORI using "Plagiarism Tools" in the subject line.