We mainly hang out in the #arxfatalis channel on the Freenode network.
If you are new to irc, please see the wiki page!
An easy way to chat in #arxfatalis is to use the web-based client.
#arxfatalis is logged for better communication across timezones. The logging bot has been kindly set up and is hosted by OpenGameArt.org.
If your are more comfortable with message boards, feel free to post to /r/ArxFatalis.
We don't have our own forum, but you'll probably be able to find help on one of the various existing Arx Fatalis forums.
If you have found a problem in Arx Libertatis, please open a bug report.
This website is hosted and administered by Daniel Scharrer.