This is an Omnibox extension that helps navigate to a fully customizable set of well known URLs.
Open a New Tab, and type go+TAB in the Omnibox, which activates the extension. Type the short name used and ENTER to navigate. The extension also provides suggestions as you type. Once you have entered the short keyword followed by the ENTER key, you will be navigated to the fully qualified URL.
Open the Options panel to configure the short names that you want to use for your frequently visited URLs.