Coment is a tool for monitoring and managing all comments on Facebook, Instagram, Twitter, YouTube, Disqus and WordPress with a single click, all from one single dashboard. Plus, it's for free!
Hosted and reasonably priced comment system for websites that is easy to set up and contains no ads or tracking.
Heyoya is a voice comments platform that brings the depth and nuance of the spoken word to online commenting systems. By allowing site visitors to record their spoken thoughts as comments, Heyoya turns your website into an interactive conversation.
MyTwoCents is a Chrome extension that adds a comment section to any website you want. The idea is to offer discussions on sites where there originally is none or where comments are disabled, .e.g. on news sites or on Netflix or live sports streaming or anywhere you want to add your two cents :)
MyTwoCents Comment Aggregator is a browser extension that puts the relevant Reddit, HackerNews and Facebook comments (for now) on any website with the push of a button. It also shows the number of comments available for the current site on the extension icon in the browser.