Enhanced Steam is a Google Chrome browser extension. This is the open-source development repository.
You can install this yourself by putting Google Chrome into "developer mode" on the Extensions tab.
Enhanced Steam is Copyright 2012, 2013 Jason Shackles. This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation. A copy of the GNU General Public License can be found at http://www.gnu.org/licenses/.