The following plagiarism tools are available:

It is recommended that each and every journal has a plagiarism policy. This can form part of the Ethics Policy for a specific journal.

As a practical consideration, if a journal uses double-blind review, depositing anonymous papers to a database used by a plagiarism checker (such as Turnitin) could have unintended consequences. If the paper is withdrawn or rejected, it may show up in a plagiarism check if it is subsequently submitted elsewhere.

Example Plagiarism Policies