Online support offers you two links, one to this Wiki, the other to a built-in IRC client

IRC Online Support

Clicking on this loads a Java IRC client, which connects to the
FreeNode? IRC network, and joins the '#freepbx' channel, where most of
the developers are.

NOTE

When you join the IRC channel, the FreePBX version you're using,
and the kernel version of your machine will be sent to everyone in the
channel automatically. This is to assist developers with diagnosing any
problems you have, but also may cause you to have privacy concerns. If
you do not wish this information to become public, DO NOT USE THIS
CLIENT.