Plagiarisma - Plagiarisma.Net is a free online plagiarism checker and duplicate content finder.
MyBib - A new FREE citation generator.
iThenticate - Prevent Plagiarism in Published Works
Zotero - Zotero is a free, easy-to-use tool to help you collect, organize, cite, and share research.
PlagScan - The Internet makes plagiarism a bigger problem than ever.
Mendeley - Easily organize your papers, read & annotate your PDFs, collaborate in private or open groups, and securely access your research from everywhere.