There are seven guilds in play in SOCK2. Each can be reached by visiting its own subpage.

Guild of Magus
Order of Beorn
Brotherhood of Lief
SOCK Intelligence Agency
Healing Shield, The
Hidden Hand, The
AC (for Air Conditioning, formerly for Alternating Current for who cares how long, formerly The Action Camp, for one whole day)

The minority of active players are currently "going it alone." We can confirm that approximately 40 contestants are in guilds, and we know the identities of at least 30 of these players.