WSN Forum is ideal for the ambitious forum admin, designed to allow maximal customization and extensibility. Automatic posting of newsfeeds as topics helps you jumpstart your forum. It includes an extensive suite of features, including an illiteracy detector and many other ways to track and prevent undesirable posts and members. The toplists allow flexible display of data, and any number of new fields can be added. Includes a chat room, shoutbox, instant messaging, quotes system and various other options which you'd normally have to find an add-on for, which can be easily turned on or off from the switches area. It upgrades itself automatically so you never have to worry about missing security updates. Also available as a wordpress plugin.