iThenticate - Prevent Plagiarism in Published Works
Plagiarism Checker X - We strive to provide the most effective, secure and user-friendly plagiarism checking tool that champions originality: a privacy focused, effective and user-friendly plagiarism detector that merges innovative technology with user needs.
Plagramme - Our plagiarism checker recognizes paraphrased plagiarism, checks your paper against more that 14 trillion documents and lets you to edit your paper online.
PlagScan - The Internet makes plagiarism a bigger problem than ever.
SCRiBBR Plagiarism Check - This plagiarism check uses the best of both worlds.
Urkund - Detect and check for plagiarism with URKUND