Discourse is the 100% open source discussion platform built for the next decade of the Internet.
As an example, Disqus and Webmention.io are interesting examples of how a company could specialize into handling comments for user’s sites. These two are both doing things very differently and at much different price points. Disqus is large and bloated and seems to have quite innovating and iterating. I have to wonder what it would look like with more players and more competition in the space?
In fact, I’m still wondering why hasn’t Disqus picked up and run away with the Webmention spec?