Disqus is an online discussion and comment platform that allows users to easily post comments and engage in conversations with other users. It provides a unified platform for users to share their opinions, discuss topics, and exchange ideas with each other in a safe and secure environment. Disqus is available as a web-based platform, as well as a mobile app. The platform also allows users to follow other users, participate in polls, and customize their profiles. In addition, Disqus has a powerful moderation system that allows moderators to manage the conversations on their websites and protect users from abuse. Disqus is used by millions of websites, blogs, and other online communities to provide an engaging and interactive experience for their readers.
Because it's really fast, and I see a bright future, since Mozilla and Digital Ocean are sponsoring it.
It is open source and lightweight.
Discontinued The last commitment to the GitHub repository was December 3, 2012.
Suspended Last commit 39def28 July 29, 2013
Extremely easy to use if all you need is a simple comment box.
Discontinued Gone, no update and website is broken.
Spirit is intended to be an independent discussion forum. Unlike Disqus, it cannot be embedded on other sites.
Discontinued Appears to be discontinued as of April 2, 2013.
Isso
Commento
Commentics
talkatv
HashOver
JustComments
Pubble
Master Comments System
HTML Comment Box
CommentBox.io
Hyvor Talk
komentify
GraphComment
IntenseDebate
Cowments
Spirit-Project
Krowdify Notes
SolidOpinion
coComment
It's basically like diquis commenting publication seeing and more.