Apps similar to utterances include Disqus, which has a free version. Other options are Isso, Zoomment, EchoThread and Commento. Comment Platforms like utterances are a crowded field, with more than 25 alternatives for the web, self-hosting and Linux.
LiveRe is an alternative to Disqus based in South Korea and used by LG, Samsung, Nike, Kia, Hyundai, ... Like Disqus you it allow social log-in. It allow comment with attachment such as image & video.
Coral is an open source commenting tool from Vox Media, helping publishers of all sizes build better communities. It runs the comments on the Wall Street Journal, the Washington Post, the Globe and Mail, and dozens of other websites around the world.
United States