Like I said, no credible third party.
The problem ultimately is that no one has a coherent ideology outside of neoliberalism to present, save for one - the socialists. For a great many reasons, the socialists will never get anywhere, the ruling elite of America will resort to violence to make sure that doesn't happen. Neoliberalism cannot tolerate dissent, and it will only get worse.
If you want a picture of the future, imagine a boot stamping on a human face - forever.