Giscus is a cool comments management solution vis Github:
It lets users auth through Github then posts comments as discussions under your repo.
We use it here for instance: https://predibench.com/models
I like giscus too, it’s pretty neat. It makes a lot of sense for tech blogs since the audience likely already has a GitHub account. And the comments being hosted in discussions makes them easy to backup in case you want to roll your own comment system someday.