Geist.chat is a comment system that is easy to integrate with any website.
Features: - Modern, responsive UI - Easy to configure and moderate - Single Sign-On: users can comment without making a new account. - Emoji reactions
DISQUS - Disqus is a global comment system that improves discussion on websites and connects conversations across the web.
IntenseDebate - IntenseDebate's comment system enhances and encourages conversation on your blog or website.
Viafoura - Viafoura is an easy-to-integrate social monetization platform that enables your to better engage, understand and monetize your community.
Hyvor Talk - The Best Commenting Platform For Your Website
GraphComment - Add modern discussion and social interactions to your website
Padlet - Visual boards for organizing anything.