You are browsing the old Contao 3 extension repository. Contao 3 is no longer maintained as of June 2019! You can find the Contao 4 extensions on extensions.contao.org.
Extensions > con4gis_forum
Forum (board) for Contao
With con4gis-Forum, the official sequal of CFS-Forum, you can offer as many forums as you like to your users organized hierarchically. Just define your forums and add a frontend module to your website and there you are. You can administer threads and posts in the frontend, secured by a detailed permission system.
Note: the CFS-Forum frontend module is loading the jQuery library by default in noConflict-Mode, so it shouldn't conflict with Mootools. However, you can deactivate this in the configuration of the frontend module and load it by yourself.