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.
Schnack Alternatives
Schnack is described as 'Open source commenting system written in JavaScript' and is a comment platform in the social & communications category. There are more than 10 alternatives to Schnack for a variety of platforms, including Web-based, SaaS, Self-Hosted, Wordpress and Shopify apps. The best Schnack alternative is Disqus, which is free. Other great apps like Schnack are Zoomment, giscus, Guestbooks and Hyvor Talk.