Well, there's always the
Political Compass.
I think it does a pretty good job of portraying varying political viewpoints (both socially and economically). I fall in with the libertarian left.
Note: The American "Libertarian Party" would probably classify as libertarian right, though as the Political Compass points out, their "libertarian impulses stop short of opposition to strong law and order positions, and are more economic in substance (ie no taxes) so they are not as extremely libertarian as they are extremely right wing."