You can also connect using a web based portal. A popular one is www.mibbit.com.
The following channels are all located on the freenode network. The freenode network can be connected to via irc.freenode.net on port 6667 (this is the standard default port for IRC).
(These links will only work if you have an IRC client installed that supports the irc:// link format, otherwise you can use the (m) links to use mibbit.) #WowAce (m) - This is a general WoW development channel and the WowAce channel #WoWUIDev (m) - This is a general WoW development channel and the WoWInterface channel #CurseForge (m) - This is not a general development channel but for CurseForge/WowAce site issues #WoWWiki (m) - WoWWiki related chat #WoWHead (m) - WoWHead and general WoW chat
The following link will connect you to our two main channels on freenode, #WowAce and #WoWUIDev, using mibbit.
At times the channels are attacked by spam bots and we are forced to lock the channels so that only registered users can join or chat. If you find yourself in ##unavailable, #wowuidev-unavailable, or you get a message saying you must be registered to join then the channels are temporary locked.