List of free comment tool/service for developerππ½

Webmention.io
Webmention.io is a hosted service created to easily receive webmentions on any web page.
Tag: comment, webmention

Disqus
Disqus offers the best add-on tools for websites to increase engagement. We help publishers power online discussions with comments and earn revenue with native advertising
Tag: comment
Real time comments Automated Spam Moderation

Commentbox
Hosted commenting that's painless to embed, a pleasure to use, and a breeze to moderate
Tag: comment
1GB bandwidth monthly 100 comments monthly