When comparing Muut vs PHPBack, the Slant community recommends PHPBack for most people. In the question“What are the best web forum software packages?” PHPBack is ranked 12th while Muut is ranked 20th. The most important reason people chose PHPBack is:
It has been already translated to Spanish and they are adding support for more languages.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Fast
Pro Responsive
Pro Uncluttered
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.
Cons
Con No post edit history
Posts can be edited for 2.7 minutes. After that, they remain fixed forever. This makes it impossible for the original post to be updated to reflect the current consensus, the latest version of a software being discussed etc.
Con No Self-hosted option
Muut uses a system similar to Disqus where your forum, comments etc. reside on their servers.
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.