Bloggers use Disqus to stop spam comments otherwise the posts will flood with non-related comments. Disqus is one that is used by many bloggers and it is recommended by many.

Everything has an exception so Disqus too. Some bloggers prefer social commenting and some install other similar commenting systems.

Disqus comment system

Disqus gives you a dashboard to control all comments, delete or accept it anytime. It has a community similar to Facebook and Google you can participate in others or create own channel on your topic of interest. So community sites have less spam than blog default comment systems. Most bloggers do not like the time it takes to appear, takes some seconds to load comment post and all previous comments.

How to install Disqus?

It has a plugin for most Blogging platforms. Their one-click set up will do all the steps. You can do the same manual by the universal code.

WordPress, Blogger, Tumblr, Typepad, Movable Type, Drupal, Joomla, Squarespace

Working with WordPress or other platforms? Just search for the plugin and click to install as you do with other plugins.

Disqus let you comment using your Disqus, Facebook, Twitter or Google account.

Vuukle

Vuukle
Similar to Disqus you can install it for your blog. Here you get a profile page where all your recent activity appears as in Disqus. Supports all platforms custom website, blogging software, publishing software, Android and iOS. Add extra if you want like emoji, PowerBar shows the count of sharing and newsletter subscription manageable on the Vuukle dashboard.

Login with Facebook, Google or Vuukle ID to post a comment.

POWr

powr has a number of plugins for blogs and eCommerce site owners (form builder, social feed, eCommerce, media gallery, multi slider, social media icons, pricing table, digital download, booking and more).

Here we are talking about its comment platform you can use to stop spam comments. Support most of the CMS including manual installation. It has the free installation with limited features, the premium version has advanced features. Emoji available in free version premium version allows you to remove their logo, replies and voting, anonymous commenting and other features.

Login with Facebook, Google or powr ID to post a comment.

Social sites commenting system

If you have a blog dedicated to social sites like Facebook and Google. You provide tech support related to these or just want to allow only Facebook/Google users to comment on the post then you would like to install this.

Installing such a commenting system is easy and you can stop spam comments more compare to default comment systems. Most of us do not like to post from social sites but there are people who do use social sites to participate in blog comments.
Facebook, Google, Blogger, WordPress.