Source Code Download System administrators can now download PAIRwise. To install PAIRwise locally, read the Installation Instructions and then download the latest version of PAIRwise. Also, be sure to read the license agreement before using. PAIRwise Demo Take PAIRwise for a test drive and see how it works. Check the authenticity of a single paper or compare two documents to each other. User Forum PAIRwise user fourm to ask and answer frequently asked questions.