6. bbPress
There are diferent opinions about this forum software; some people are satisfied with its functionality, while others are not. But in any case, it is nice and smooth forum software solution. Firstly because it is compatible with WordPress (made by WordPress creators), and can be installed as a plugin to WordPress, thus being mostly efficient for the WordPress powered website. Creators of bbPress cited that simplicity is the most important feature concerning codes, as well as speed and forum’s security.