[taltman1]

I'm late to the game, but I'm surprised that no one has mentioned StaticMan yet:

https://github.com/eduardoboucas/staticman

Just uses Git(Hub|Lab) to triage and approve comments for your static sites, like Jekyll.

[ryantgtg]

I’ve used staticman on a few sites and I think it’s great. My sites don’t get a lot of comment action, so merging PRs isn’t an annoyance.