GraphComment
graphcomment.com
GraphComment is a comments platform that helps you build an active community from the website’s audience.
Shelf 514 free tiers
Commenting Platforms
Services in Commenting Platforms that offer an ongoing free tier for developers. Limits change often — confirm on the provider's pricing page before you build on one.
Spot something outdated? Fix it upstream ↗4/4
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IntenseDebate
intensedebate.com
A feature-rich comment system for WordPress, Tumblr, Blogger, and many other website platforms.
Open source hosted comments platform, pay what you can for "One moderator on a few domains with complete control over behavior & appearance"
Utterances
utteranc.es
A lightweight comments widget built on GitHub issues. Use GitHub issues for blog comments, wiki pages, and more!