What is Commento?
Commento is a popular, fast, bloat-free commenting system that you can embed on your blog, news articles, and more. Open source at its core, Commento guarantees you privacy and does not include third-party trackers and advertisements, unlike alternatives such as Disqus.
You can choose to use Commento on-premises or hosted.
Comments and Reviews
Said about Commento as an alternative
Can be self-hosted or not. Free if you've contributed.
It's open source and it's lightweight.
Because is really fast, and I see a bright future, as Mozilla and Digital Ocean are sponsoring it.