ATMentions
Webmentions widget for the ATmosphere that shows how the open AT Protocol network reacted to any page — likes, reposts, recommends, reads, and more from across the network
ATMentions is an alternative to
Webmention.io
Webmention.io is a hosted service for receiving and displaying webmentions, pingbacks, and other web-based reactions to your content.
Disqus
Disqus is a centralized blog comment hosting service for websites and online communities with social media integration.
Facebook Comments Plugin
Facebook Comments Plugin is a centralized embedded comment and reaction widget for websites using Facebook's social graph.