https://threema-forum.de/ https://threema-forum.de/ was migrated to "WoltLab Suite Forum" a while ago. I didn't know that software before, but everything seems

https://threema-forum.de/ https://threema-forum.de/ was migrated to "WoltLab Suite Forum" a while ago. I didn't know that software before, but everything seems to work really nicely. Still has the classic forum features but it doesn't feel like it's from 1999. (Note: It's not open source and costs 100€ per year to license. I'm not affiliated in any way, just a user.)