There are libertarians who favor abandoning the term "capitalism" and only using the term "free market" because there are those who overload the term "capitalism" to mean all of the above ideologies. But there is no way to justify overloading the term "free market" because its definition is much more explicit and it is the government doesn't try to stimulate demand, and it doesn't try to stimulate supply, and it doesn't manage the money supply, and it doesn't try to stimulate GDP, and it doesn't enact policies to distribute money to the poor, and it doesn't enact policies to distribute money to the rich. All of those policies, all of those ways that the government would try to do something with the economy (always with the best of intentions of course since I don't want to blaspheme your god) are against the very basic definition of Free Market.
So basically libertarians are for a Fall Out 3 type society.
Sounds awesome!