(And yes, I do know many people use FSE and or TW, this I just more for personal means of regiments)
I know this may be either. A. Wrong section, or B. Your all not going to care. But I tend to see a lot of regiments rely just on their ts3 and or discord. So I thought, hey maybe I can help out and not be a useless man. Although I know most regiments use Enjin, I figured this may help out a few people either way. And I'd like to say most of these offer much use to those who want a basic to go, but I will list a few I've found that are for those who like to go "overboard".
Websites for your Regiment forums
https://www.enjin.com - A common free gaming forums
https://www.wix.com -More of a professional website but it could be used
https://www.proboards.com -A highly customizable forums, plugins, themes, etc. Can be of use for those who like to be visual.
https://www.iclanwebsites.com/?ref=2348321 -I use to use this for GMOD, similar to proboards but mainly built to be information and recruiting to my knowledge. But a bit more limited due to its a pay website, but still good free features.
http://trello.com -Not exactly a forums,but a information place. I'd recommend this if your a competitive group to store event wins and loses and blah blah.
So yeah I hope this either saved your time, didn't waste your time, and or helped you In any way! But again, I know this thread is most likely pointless.
(I'll update this list if any websites change and or find any new)