This mod adds commands to Minecraft to help you in your game:

Commands:

/gmc {selector} > Sets game mode to creative

/gms {selector} > Sets game mode to survival

/gma {selector} > Sets game mode to adventure

/gmsp {selector} > Sets game mode to spectator

/day > Sets the day

/night > Sets the night

/ng {selector} > Gives Night Vision

/message {text} > Send a message in the chat

/feed {selector} > Fills the food

/heal {selector} > Fills life

/dmg {selector} > Deals damage

/rename {selector} > Rename entities

/killitems > Kills all items

/spawn {mob} {number} > Spawns mobs by number

/tpdimensions {selector} > Teleports players to a dimension

/speed {selector} > Gives speed

/height {number} > teleport higher

/vanish > makes the player invisible

/kill allmobs > kills all entities except players

/kill mobs {mob} > Kills a specific entity

/onfire {selector} {time} > sets the target on fire

/boom {selector} > creates an explosion on the target

/anvil {selector} > drops an anvil on the target

/thunder {selector} > strikes lightning on the target

/cobweb {selector} > traps the target in cobwebs

/freeze {selector} > freezes the target in place

/unfreeze {selector} > removes freeze effects

/gravity {selector} {power} {time} > changes the gravity on the target

/tphere {selector} > teleports a target to you

/tprandom {selector} {number} > teleports the target to a random location

/mount {selector} {selector} > makes the target ride another entity

Mod translated into:

English, French, Italian, Spanish, German