• /help - gives you a list of the basic commands
• /list - tells you the names of everyone online
• @[username] - sends a private message to a user
• @@ - replys to a private message
• /credits - tells you have much credits (c) you have
• /buy - gives you a list of available item to buy
• /buy [item] [amount] - adds selected item to your inventory in exchange for credits
• /sell [item] [amount] - sells current item in hand for credits
• /pay [playername] [amount] - gives player selected amount of your credits
• /fill [block] - while holding a feather you can fill an airspace with a selected block in exchange for credits
• /titan - tell you how much titan power you have left as well as your titan mode
• /titan buy - purchases more titan power
• /titan mode - tells you available titan modes
• /titan mode [mode] - sets your titan mode
• /creative - teleports you to the creative zone and changes your gamemode to creative
• /spawn - teleports you to the default spawn
• /assign - explains assign limits and how to assign areas
• /assign set - sets an area that only you have access to unless granted
• /assign grant [username] - grants a user access to you assign
• /assign revoke [username] - removes a users access to your assign
• /set assign - sets a telepoint, usually set at your assign so you can teleport to it
• /go assign - teleports you to your assign spawn point (if set)
• /sethome - sets your home to your current location
• /home - teleports you to your home
• /home [username] goes to another players home
• /setreturn - sets a telepoint at your current location
• /return - teleports you to you return point
• /rechunk - reloads all the local chunks
• /pvp - enables pvp, meaning mobs and other players can and will hurt you
• /unstuck - teleports you to the highest point above you
• /uptop -  teleports you to the highest point above you

if anyone thinks of any other commands please post the command below
NOTE: this is not were to posts command suggestions