/AbandonClaim Deletes the claim where you stand
/ClaimExplosions Toggles if explosions are allowed in the claim.
/Trust Gives another player permission to edit in your claim. You can also do /t
/UnTrust Revokes any permissions granted to a player in your claim. You can also do /ut
/AccessTrust Gives a player permission to use your buttons, levers, and beds. You can also /at
/ContainerTrust Gives a player permission to use your buttons, levers, beds, crafting gear, containers, and animals. You can also do /ct
/TrustList Lists the permissions for the claim you're standing in.
/SubdivideClaims Switches your shovel to subdivision mode, so you can subdivide your claims. You can also do /sc
/BasicClaims Puts your shovel back in basic claims mode. You can /bc
/PermissionTrust Grants a player permission to share his permission level with others. You can also do /pt
/Untrust All Removes all permissions for all players in your claim.
/AbandonAllClaims Deletes all of your claims.
/ClaimsList Lists a player's claims and claim block details.
/IgnorePlayer Ignores a target player's chat messages. You can also do /Ignore
/UnIgnorePlayer Un-ignores a target player's chat messages. You can also do /UnIgnore
/IgnoredPlayerList Lists all players currently ignored. You can also do /IgnoreList
/Trapped Gets a player out of a land claim he's trapped inside.
/sethome Sets home at current location
/home Teleport's player to set home location after they have set home.
/delhome Deletes home set location if one is set.
/tpa ign Sends a teleport request to said player to be able to teleport to them.
/tpaccept Accepts a teleport request sent from another player.
/tpdeny Denies another players teleport request sent to you.
/warp Brings up a list of warps and their names
/warp warpname Warps you to the warp's location
/mail read Allows you to read mail that you have received from another player.
/mail clear Deletes all mail that you have received.
/spawn Teleports you to spawn location

/mail send ign msg Allows you to send a mail to another player
/msg ign Sends a private message to an online player. You can also use /w ign, /tell ign
/r To reply to a message sent from another player or to continue to send another msg to the same player.
/tpahere ign Sends a request to have a player teleport to you.
/tptoggle Turns off the ability to send/receive teleport requests.
/seen ign Tells how long a player has been offline/currently online for.
/near Tells you how close a player is near you.

/sethome homename Set another homeset
/home homename Teleports to that homeset

/sethome homename Set another homeset.
/home homename Teleports to that homeset.
/msg ign msg To send colored messages. Color codes found here

They also receive the ability to send URL's in both chat and private messages.

/nick newname Allows you to change your name (plain)
/hat Allows you to wear current wielded item/block as a hat.

/nick name Allows you to have a colored name with no effects.

/fly Turns the ability to fly on/off.
/workbench Brings up a crafting bench. You can also use /craft
/back Teleports you to your last teleport/spawn/death location.
/nick name Full nick abilities.

/recipe itemname Brings up the crafting setup of that item
/enderchest Brings up your enderchest. You can also do /ec

/speed # Sets your respective flying/walking speed to 1-10