Mind Collected (http://www.mindcollected.com/) is yet another interesting portable application (untested, see below), which sadly doesn't have a free counterpart...
[url]http://www.dextronet.com/mind-collected[/url] author wrote:Visually catalog and connect ideas and things from your life. Each object in your visual database has a picture, name, tags, rich notes, and connections to other items. Mind Collected can automatically search and download pictures for your objects from the Internet, or you can use your own photos.
[url]http://www.mindcollected.com/installation-and-files/#Portability[/url] author wrote:Mind Collected is portable. You can just copy the Mind Collected folder to a USB drive or other computer and run it from there without any additional requirements. The 3 uninstaller files and the 2 .url files are not required by Mind Collected and can be omitted when making a portable copy.