What are good self-hosted alternatives? I remember looking at Commento (https://github.com/adtac/commento) before, but if people have had good experiences with others I'd like to hear them.
Yep, commento is a great self-hosted alternative.
There's also Isso[1] and utterances[2] (Github issues based)
[1] - https://posativ.org/isso/ [2] - https://github.com/utterance/utterances