This is a Chrome and Firefox browser extension that strips Google Analytics (i.e. Urchin Tracking Monitor) parameters, and various other click tracking tokens, from URL query strings. This is done before the web request is made and results in both more private browsing as well as more aesthetically pleasing URLs.
Aware of Facebook, Google, Hubspot, Instagram, Mailchimp, Marketo, Microsoft, Olytics, Wicked Reports, Yahoo, Yandex, and a few generic URIs.