AntiPlagiarist - AntiPlagiarist checks multiple documents for plagiarism.
iThenticate - Prevent Plagiarism in Published Works
PlagScan - The Internet makes plagiarism a bigger problem than ever.
Urkund - Detect and check for plagiarism with URKUND
Plagiarisma - Plagiarisma.Net is a free online plagiarism checker and duplicate content finder.
Plagius - Plagius - Plagiarism Detector is a plagiarism checker software. Plagius analyzes documents searching for occurrences of plagiarism over the internet. It analyses docx, pdf and also compares local files.