See ErcExtraModules first if you use the version of ERC that comes with Emacs 22 and you don’t have erc-list.el.

erc-list.el implements a channel list view mode buffer.

Use the /LIST command or invoke it interactively with M-x erc-chanlist RET to get a nicely sorted channel list in a separate buffer.

Some keybindings

If point is at a channel name (at the # sign), you can join that channel by pressing ‘j’ or ‘C-c C-j’. Use ‘s’ to sort alphabetically or according to the number of users in a channel. Type ‘t’ to toggle display of details about each channel. Type ‘q’ to hide the window and restore previous window configuration again.

ERC, ErcExtraModules