Check the fan pages in the links section of DN1, They Just added some stuff so I don't know who's out of date or not but my personal favorite is Stack's MxO Archive.
/ Slash Commands
2 posts · 2006-05-28 06:52:00 to 2006-05-29 10:58:00
There is also a list on MxO Archive, and there is a printer-friendly version :smileywink: I would give you the link but now they have some sort of new website. Wait, I got it:
Emotes: http://arnforce.com/mxoarchive/emotes.html (There is a link to the printer version on the bottom)
Commands: http://arnforce.com/mxoarchive/commands.html