Ursula K Leguin, 100%. The Dispossessed is about an anarchist society. Might also check out Kim Stanley Robinson and Kameron Hurley.
Hadn't heard of either of the other two authors though - thank you for sharing!
The Dispossessed is excellent literature regardless of one's politics, though. The anarchist society depicted in it is utopian, but shown with warts and all fully exposed, and that makes it that much more believable.
I find that it pairs great with Moon is a Harsh Mistress, which, while very different in terms of language and writing (but also great!), sort of does a similar exposition of an anarcho-capitalist utopia - again, warts and all.