Forums made simple. Modern, fast, and free!
SpecsUpdate
Ranked in these QuestionsQuestion Ranking
Pros
Pro Very fast loading time
The extensibility allows you to install and enable only the extensions that you desire. This is beneficial to the performance. In addition it's a SPA so js and css are loaded once and retained.
Pro Open source
Released under the very permissive MIT license, the source is freely available on GitHub and the Flarum Foundation was set up to guarantee the open source nature of Flarum as well as guarantee independence.
Pro Modern UI
Designed to be mobile-first, while still allowing a rich interface on desktop. Flarum is created from the ground up to be intuitive and simple to work with.
Pro Easily expandable
Most of the features are extensions, you have free control to en- or disable and remove extensions according to your needs. That keeps Flarum thin, lean but also extremely suitable for all types of communities.

Pro Great community
The community building flarum is fantastic and very helpful!
Pro Lots of features
The developers do a great job adding new bells and whistles.
Pro Mobile Friendly UI
Pro Based on (but not built with) Laravel
Flarum is based on many components from Laravel (like Eloquent) and Symfony, thus providing a sense of familiarity to developers with experience in those frameworks.
Pro Easy installation
As long as you have access to composer, installation is a breeze. This also makes extension management install/removal very easy as the two processes are one and the same.
Pro Intuitive
Very easy to use and feels very modern, unlike most of the competition out there.
Pro Easy installation on shared hosting services
Available on softaculous (an auto-installer for web hosting control panels like cPanel).
Pro Steadily growing
In the last few months Flarum is experiencing growth like never seen before, it's definitely time to jump on board.
Cons
Con Extremely complicated to install
It's extremely hard to install Flarum, especially using anything that is hosted by Amazon. Good luck with a simple install for Amazon.
Commonly Compared
Built By the Slant team
Lustre recommends the best products at their lowest prices – right on Amazon.