You might try some Ursula LeGuinn. She did one (can't remember the name) about a planet which was a creative anarchy.
The Dispossessed, subtitled "an ambiguous utopia". From what I recall reading of it (lo these many decades ago) Annares seemed like a pretty dreary place to be.
Ken McLeod's
Cassini Division features (on this side of the magic hole to elsewhere) a socialist anarchy. I think this is what-cha-call "post scarcity anarchism", with, in this case, magic nano-tech providing an unending cornucopia of stuff. On the far side of the magic hole to elsewhere is an accidental colony of anarchocapitalists.
The Stone Canal tells the other half of that story.
McLeod has kind of an interesting take on politics. The categories he works with aren't American. I think he might have been a Trotskyite at one point.
Job: A Comedy of Justice comes to mind,
I don't recall anything overtly anarchist|libertarian in that book, unless Texas (aka Hell) counts.