Comment systems

Livefyre

152.7K sites

Livefyre is a platform that integrates with the social web to boost social interaction.

Disqus

17.6K sites$ · Subscription

Disqus is a worldwide blog comment hosting service for web sites and online communities that use a networked platform.

Vuukle

236 sites

Vuukle is an audience engagement and commenting platform.

utterances

175 sitesOpen source

Utterances is a lightweight comments widget built on GitHub issues.

IntenseDebate

93 sites

IntenseDebate is a blog commenting system that supports Typepad, Blogger and Wordpress blogs. The system allows blog owners to track and moderate comments from one place with features like threading, comment analytics, user reputation, and comment aggregation.

Question2Answer

89 sites

Question2Answer (Q2A) is a popular open-source Q&A platform for PHP/MySQL.

Twikoo

51 sitesOpen source

Twikoo is a simple, safe, free comment system.

Isso is a lightweight commenting server written in Python and JavaScript, referred to as "Ich schrei sonst" in German.

Annoto

SaaS

Annoto is a platform that transforms video viewing into an interactive, social, and collaborative experience rather than a passive individual activity.

Cackle

SaaS$ · Subscription

Cackle is a cloud services platform for increasing conversion using comments, feedback collection, online consultant and surveys.

Commento

SaaS$ · Subscription

Commento is a tool for fostering discussion and improving engagement on websites.

Cove

SaaS

Cove is a commenting and community platform that integrates with Ghost sites to enable reader discussions and user engagement.

Giscus

SaaSOpen sourceFreemium

Giscus is a comment system powered by GitHub Discussions.

ReplyBox

SaaS$ · Subscription

ReplyBox is a privacy-focused comment system designed to collect, store, and display user feedback while minimizing data exposure and supporting secure interaction.