When comparing PHPBack vs Disqus , the Slant community recommends Disqus for most people. In the question“What are the best user support & feedback services?” Disqus is ranked 3rd while PHPBack is ranked 10th. The most important reason people chose Disqus is:
Can be easily included into any website using the iframe form.
Ranked in these QuestionsQuestion Ranking
Pros
Pro Multi-language support
It has been already translated to Spanish and they are adding support for more languages.
Pro Easy setup
PHPBack is very easy to setup, all you need is a server with PHP5 and MySQL installed.
Pro Open Source
PHPBack is open source, uses GPLv3 license.
Pro Can be easily integrated in any website via iframes
Can be easily included into any website using the iframe form.
Pro Seamless design
Seamless design that doesn't require users to leave the page to access features such as profiles.
Pro Wide adoption
There's a large pre-existing user community. Many people already know how to use this comment system.
Pro Works with static sites
Disqus can be used with a static site so it's possible to keep the benefits of a static blog and still have dynamic comments.
Pro Not connected with the Evil Facebook ecosystem.
Pro Clean, minimalist interface & design
The Disqus design is minimalist and is broken down into three tabs - discussion, community and My Disqus.
The discussion interface provides the usual elements, but with unique features like visual indicators of live actions, such as new replies and even when another user is typing. It's possible to sort discussion by new, old and best.
The community tab is designed to help connect commenters together to form a network that keeps them coming back. It is also a great source of traffic from external sites.
My Disqus helps users quickly keep track of activities in their network as well as manage notifications.
Pro Community features
Community features such as Top Commenters, Top Discussions and the ability to form networks around your own commenters
Cons
Con Small community
PHPBack is fairly young (first stable version was releases in July 2015). Currently the community is small, which may make it more difficult to find help/support.
However, the developer is active on the github page and generally responds quickly.
Con Does not allow you to customize its style
Disqus uses !important
flags in its CSS to prevent you from being able to customize its style at all.
Con Closed-source
Con It may be old
The interface looks very dated.
Con Sponsored comments
Disqus puts ads in their embeds.
Con Tracking users
Mining and selling their data.