Are there any nations with Libertarian governments?

Libertarians have gained more attention in the last couple years (at least I’ve noticed them more), and I’m wondering if there is a model government currently in existence to which they are basing their philosophy of privatization and smaller government.

If there is, please name the country and provide some information about how their government works. You can contrast it to the US if you wish.

I’m asking because while I believe greater economic freedom generally yields greater growth and innovation, I wonder how less regulation affects social classes.

I’m really hoping the mods can keep this on track