Plagiarism detection tools, also known as text-matching software, are expected
to use the state-of-the-art methods to detect plagiarism. Expected output is the
suspicious document, where plagiarized parts are highlighted (showing WHAT
was copied), together with links to potential sources (showing WHERE these
parts come from. To reveal HOW the source was changed, human consideration
There are number of systems available for free or as a paid service, some are
available online, some can be downloaded and used locally. Academics around
the globe are naturally interested in question – which of these systems is the
The most methodologically sound comparison used to be done by prof. Debora
Weber-Wulff and her team. In their last test in 2013, 15 tools were compared.
The selection of the tools was done based on previous comparisons. The
researchers used set of documents mostly in English and German.
Since then, there has not been any systematic and methodologically sound
testing of PD tools since 2013.
Members of the group