Ok, here you go with command list (PS) this will be updated as more things are added!

Chat Related                                                                                                                          

Chat
/tc [message] :Town Chat
/nc [message] :Nation Chat
/msg playername your message : send a private message to playername
/reply your message : send a private message to last payer who sent you a message

/resident set mode tc : to talk by default in Town Chat
/resident set mode nc : to talk by default in Nation Chat
/resident set mode reset : to talk by default in normal Chat

Resident Related                                                                                                                     

All resident commands can also be used with it's alias /player or /r

/resident : your stats
/resident ? : Resident help list
/resident [resident] : Resident stats
/resident set mode map : toogles automap
/resident set mode townclaim :toggles autoclaim
/resident set mode map townclaim : toogles map and autoclaim
/resident set mode reset : disables map/autoclaim
/resident friend [add/remove] [resident] .. resident] : Add/Remove resident to your friendlist
/resident friend [add+/remove+] [resident] .. resident] : Add/Remove offline resident to your friendlist
/resident friend clearlist : clears friendlist
/resident delete [resident] : delete resident of our friendlist
/resident set perm [on/off] :enable disable permissions on your plots
/resident set perm [resident/ally/outsider] [on/off] :more specific
/resident set perm [resident/ally/outsider] [build/destroy] [on/off] :even more specific

Modes:
reset : Reset modes to default.
map : Show the map as you move between town blocks.
townclaim : Claim as you walk.
townunclaim : Unclaim as you walk.
tc : Talking to your town won't require you to prefix "/tc".
nc : Talking to your nation won't require you to prefix "/nc".
waratk : Show logging of hp of the places your town is attacking.
wardef : Show logging of hp of the places your town is under attack.

Towny Related                                                                                                                           

All towny commands can also be used with it's alias /t

/town : your town stats
/town ? :town commands list
/town list : list of towns
/town leave : leave your stone
/town here :infos on the town you're located
/town spawn : teleport to your town's spawn
/town claim : expand your town in the wilderness chunk you're in
/town claim rect [radius] : expand your town in a rectangular form
/town claim rect auto : same but with auto dimension
/town unclaim: unclaim a parcel
/town unclaim all : unclaim every parcel of your town
/town unclaim rect [radius] :
/town withdraw [$] :withdraw money from your town bank account
/town deposit [$] : deposits
/town new [town] : create a new town with you as the mayor
/town new [town] [mayor] :Same but with mayor specifics
/town [add/kick] [resident] .. [resident] : add/kick resident to your town
/town [add+/kick+] [resident] .. [resident] : add/kick offline resident to your town
/town assistant [add/remove] [resident] .. [resident] : add/kick assistants to your town
/town assistant [add+/remove+] [resident] .. [resident] : add/kick offline assistants to your town
/town set board [message ... ] : set your town messageboard
/town set mayor [mayor] :changes your mayor
/town set homeblock : changes your homeblock
/town set spawn : change your spawn
/town set perm [on/off] : same than resident perms , but for town
/town set perm [resident/ally/outsider] [on/off] :same
/town set perm [resident/ally/outsider] [build/destroy/switch] [on/off] :town
/town set pvp [on/off] : enables/ disables pvp
/town set taxes [$] : set Town tax
/town set plottax [$] : set Tax for the plots
/town set plotprice [$] : set the plot price.
/town set name [name]
/towny top money resident/town/all/nation
/towny top residents town/all/nation
/towny top land resident/town/all/nation

Plot Related
                                                                                                           
/plot claim : claims a plot
/plot unclaim : unclaim it
/plot forsale : setting it for sale
/plot notforsale : not setting it for sale

Nation Related                                                                                                                             

/nation
/nation list
/nation [nation]
/nation leave
/nation withdraw [$]
/nation deposit [$]
/nation new [nation]
/nation new [nation] [capital]
/nation assistant [add/remove] [resident] .. [resident]
/nation assistant [add+/remove+] [resident] .. [resident]
/nation add [town] .. [town]
/nation kick [town] .. [town]
/nation delete [nation]
/nation ally [add/remove] [nation]
/nation enemy [add/remove] [nation]
/nation set neutral [on/off]
/nation set taxes [$]
/nation set name [name]
/nation set king [resident]
/nation set capital [town]
/nation set name [name]
Towny

/towny ? : towny help list
/towny map : shows map
/towny war stats : show war stats
/towny war scores : show war scores

Towny Admin

All resident commands can also be used with it's alias /ta

/townyadmin
/townyadmin ?
/townyadmin set [] .. []
/townyadmin set king [nation] [king]
/townyadmin set capital [nation] [capital]
/townyadmin set mayor [town] [mayor]
/townyadmin set mayor [town] npc
/townyadmin set name [town/nation] [oldname] [name]
/townyadmin npc rename [oldname] [name]
/townyadmin npc list
/townyadmin war toggle
/townyadmin war toggle [on/off]
/townyadmin givebonus [town] [n]
/townyadmin reload
/townyadmin newday
/townyadmin backup
Console only

/towny seed
/towny tree

LWC Related                                                                                                                                

LWC: Chest/ Door Protection

* o /lwc -c public Create a public protection (anyone can view/modify, but not protect)
o /lwc -c password <password> Create a password-protected protection
o /lwc -c private Create a private protection
* /lwc -m Modify an existing protection
* /lwc -u <password> Unlock something (when asked)
* /lwc -i View information on an already protected inventory
* /lwc -p Activate a mode if it is not blacklisted
* /lwc -r <protection|modes> Remove an existing protection or all modes activated on you


Shop Related          
                                                                                                                       
/shopcheck [Item]
/shop list
/shop list buy
/shop list sell
/shop list info

/shop sell - sells block in hand to the shop
/shop sell [# or all] - sells that amount of the block in your hand to the shop
/shop sell [itemname] [ammount or all] - sells block of that type to the shop
/shop buy [itemname] [amount]

Iconomy Related                                                                                                                                        

/money - check your balance
/money ? - Help for basic money commands
/money rank - Rank on the topcharts
/money top - Richest players list
/money pay [player] [amount] - Send money to a player
Money
/money pay [player] [amount] : Send money to a player.
/money : Get your current account balance.

McMMO Related

Party's
/ptp - Party Teleport
/party <nameofparty>
/p - Toggle party Chat
/invite - Invite a player to join your party
/accept - Accept any pending party invites

ICoLand Related

Legend
LANDID - ID # of the land you want the command to act on
ADDON - the name of the addon ( announce, noenter, heal )
PERMTAGS - permission tags they are formatted like: :, where is the playername or the special tag "default", and is either "-" to remove a perm, or "t" or "f" to indicate granting or denying permission

/icl - shows /icl help
/icl help - help screen
/icl list - lists all properties
/icl select [cancel|fullheight] - land selection tool ( right click 2 corners ), or with optional parameters, cancel - cancels current selection, fullheight - modifies selection to be full height
/icl info [here|LANDID] - shows more specific info on a single land, with just /icl info it shows you info on the selected land ( or the land you are currently in if nothing selected ), /icl info here shows you info of the area you are standing in, /icl info will show you info on a specific land ID#
/icl buy land - this command buys the land currently selected for the price listed under /icl info
/icl buy addon - buys the specified for the specified - addon prices are listed under /icl info
/icl sell land - sells the land specified by ( price has a "salestax" % it will buyback the land at
/icl sell addon - sells the specified at the specified
/icl edit name
/icl edit perms
Admin commands
/icl modify perms - (admin) - modifies a ' permissions
/icl modify addons - (admin) - modifies a 's addons
/icl modify owner - (admin) - changes the owner of a

Addons

Announce - will announce the name of the area when a player enters or leaves
NoEnter - will deny people from entering the zone
Heal - will heal players over time
NoSpawn - no spawns ( and removes mobs from the zone on a period configurable time )
NoBoom - no explosions ( not yet implemented )
NoFire - blocks can not burn or be ignited
NoFlow - lava/water will not flow in this zone ( if you have build perms you can have single source blocks in mid air heh )


Other

/whois - View detailed information about a player (requires Op)
/mcmmo - Displays a description of the mod and how to play
/mcc - Displays a list of mcMMO commands in game
/stats - View detailed information on your mcMMO stats
/a - Toggle admin chat (requires Op)
/setmyspawn - Set your own personal spawn location stored in a file
/myspawn - Return to your own personal spawn as if you had died (use this instead of suicide)
/chunkme - this fixes the world holes that seem to be appearing everywhere...
/admin - sends a pm to Fatnoobs desktop
/pvp (on/off) - to turn off the ability to pvp ( pvp is set to its default - off - on login )


Mob Arena Related


/ma join

/ma leave

/ma spectate

/ma list

/ma notready

nice

where'd you find those out?

Maybe wanna put in there that the /cprivate /cremove /cpublic and /cpassword commands all work, you don't have to use /lwc __ .  Just sayin'.

please do know that this list was made by someone almost a year ago in an early version of Minecraft.
so a lot of commands dont work anymore.

but at which command does it say that?