MUUT is described as 'The complete discussion system for your site'. There are more than 25 alternatives to MUUT, not only websites but also apps for a variety of platforms, including Self-Hosted solutions, Linux, Windows and Mac. The best alternative is Discourse. It's not free, so if you're looking for a free alternative, you could try Flarum or phpBB. Other great sites and apps similar to MUUT are Simple Machines Forum (Free, Open Source), Disqus (Freemium), Google Groups (Free) and MyBB (Free, Open Source).
Discourse is an open source discussion platform built for the next decade of the Internet. A modern forum, everything's been redesigned to be easy. Self-hosted Discourse software is free, hosting service is paid.
Flarum is free, open-source forum software with a focus on simplicity. You can use Flarum to easily set up a discussion forum for your website. Flarum is developed openly on GitHub. It is the combined successor of esoTalk and FluxBB. It aims to be:
Since its creation in 2000, phpBB™ has become the most widely used Open Source forum solution. Like its predecessors, phpBB™ 3.2 “Rhea” has an easy to use administration panel and a user friendly installation process, which allows you to have a forum set up in minutes.
Engage your audience The internet's favorite comment plug-in makes it easy for publishers to bring their content to life, fuel colorful discussions, efficiently moderate comments, and build engaged communities.
Google Groups is all about helping users connect with people, access information, and communicate effectively over email and on the web. Now theres a new version on the block. We didnt want to say it, but yes, its new and improved.