sethome (home name): sets a spawn for you. pretty much personal warps.
home (home name): go to one of your homes. (you don't need a name if you have one home.)
renamehome (home) (newname): rename one of your homes.
delhome (home name): delete one of your homes.
tpa (player): request to teleport to a player. stand still for 5 seconds if they accept.
tpahere (player): request a player to tp to you. they will need to stand still.
tpaccept: accept an incoming tp request.
tpdeny: deny an incoming tp request.
tpcancel: cancel any of your outgoing tp requests.
msg (player): privately message a player.
back: return to the spot you died.
hat: puts the item in your hand as a hat. just for fun.
rtp: teleport somewhere random.
everything from default, plus:
feed: refills selected player's hunger.
heal: regens player to max hearts.
repair (all/hand): sets durability of item to max.
echest: opens your permanent ender chest.
gamemode (1-2-3-4): change your gamemode.
warp: tp to a set warp.
warplist: view all set warps.
everything from default and tester, plus:
access to use tester cmds on other players.
createwarp (warp name): create a warp.
tp (player): teleport to a player without a request or wait.
everything from the other ranks, and...
kick (player): kick a player from the server.
tempban (player) (time): ban a player for a set amount of time.
mute (player): shut someone up.
jail (player) (cell): send someone to the slammer.
enchant (enchant) (level): enchant whatever is in your hand. max approx. 30,000
summon (item): summon anything, anywhere.
give (item) (amount): give anybody any item, even not in the creative ui.
note: do not use parentheses in command