Comparison Arcs is a free proof of concept tool demonstrating a method for comparing the linguistic properties of multiple documents in graphical displays. Both texts may be searched in parallel for words, lemmas and parts of speech. This project is seeking partners for further development.
Comments
The website for EURAC's LInfoVis project, which produced Comparison Arcs, currently returnes a 401 error for the project's tools and information. The project about page is still active, however, and may be viewed at http://www.eurac.edu/en/research/projects/Pages/projectdetails.aspx?pid=6109&depId=11&pmode=1
You can now directly check this tool through the project page of Linfovis:
http://www.eurac.edu/en/research/autonomies/commul/projects/Pages/Linfovis/programs.aspx#ComparisonArcs
The website is no longer available, but it can still be seen in the wayback machine.
https://web.archive.org/web/20140129143605/http://www.eurac.edu/en/research/institutes/multilingualism/Projects/LInfoVis/ComparisonArcs.html
The links have been fixed.