Thrive Comments VS HTML Comment Box

ThriveSuite includes a Comments module that can do what you're looking for. You can place commenting option anywhere you want (top, bottom, middle, etc.) on both posts and pages (ie. Disable it for "site-wide" use and place it manually only on the pages you want). Here's the link: https://thrivethemes.com/comments/. Source: over 2 years ago

Guestbooks work, but if you want it integrated into your site I suggest cbox or html comment box. Source: 12 months ago

I have always wanted my own Instant Messager/Message Board. And I figure, with my new server I built, easy peasy right? Well no. Turns out I have 0 idea what I'm doing. I want anyone on the LAN to be able to pop a message to the whole board. It doesnt have to be great, just split bubbles of text and the ability to send messages, with a username if we really want to be fancy. No accounts or anything needed, like... Source: about 1 year ago

Https://htmlcommentbox.com/ has a good free plan. You can style it with css, it has a comment section per page, is moderateable, and lets you sign in to appear as a mod. Source: about 1 year ago

You can use embed pages from community softwares like Discourse or Flarum or you can use HTML Commentbox or you can just build your own commenting system (it's not that hard). Another option can be Commentbox but it requires external login but only allows third-party auth and has lots of options like Twitter, FB, Google, Github etc. Source: almost 2 years ago