Mavericks introduced cool tabs to OS X Finder.app. But I really miss ⌘ + num tab switching feature for that. So I made the plugin to bring it to Finder. Actually I use Finder more frequently than Safari, which you have Chrome or Firefox as alternatives. Hope it also helpful to you.Originally inspired by rs/SafariTabSwitching(https://github.com/rs/SafariTabSwitching). You may wanna check it also.
Of course Mavericks Only.