Time commands:

Command	Arguments	Descrption	Player	Operator
/day	-	Set time to day		x
/night	-	Set time to night		x

Weather commands:

Command	Arguments	Descrption	Player	Operator
/sun	-	Set weather to sun		x
/rain	-	Set weather to rain		x
/thunder	-	Set weather to thunder		x

Spawn commands:

Command	Arguments	Descrption	Player	Operator
/spawn	-	Teleport to spawn	x	x
/setspawn	-	Set spawn location		x

Player commands:

Command	Arguments	Descrption	Player	Operator
/back	-	Teleport to last location or death place	x	x
/suicide	-	Suicide yourself	x	x
/trash	-	Open trash inventory, all items will be deleted when close	x	x
/afk	-	Tell other players that you are going afk	x	x
-	-	-	-	-

Home commands:

Command	Arguments	Descrption	Player	Operator
/delhome	<homeName>	Delete home	x	x
/sethome	<none, homeName>	Set home	x	x
/home	<none, homeName>	Teleport to home	x	x

Warp commands:

Command	Arguments	Descrption	Player	Operator
/delwarp	<warpName>	Delete warp		x
/setwarp	<warpName>	Set warp		x
/warp	<none, warpName>	Teleport to warp or show warps available	x	x
/warps	-	List of available warps	x	x

Teleport request commands:

Command	Arguments	Descrption	Player	Operator
/tpa	<targetPlayer>	Teleport to player	x	x
/tpahere	<targetPlayer>	Teleport player to you	x	x
/tpaccept	<none, targetPlayer>	Accept first or specific teleport request	x	x
/tpdeny	<none, targetPlayer>	Deny first or specific teleport request	x	x

Kits:

Command	Arguments	Descrption	Player	Operator
/kit	<kitName>	Give kit to player	x	x
/kits	-	List of available kits	x	x

Admin commands:

Command	Arguments	Descrption	Player	Operator
/mute	<targetPlayer> <time> <reason>	Mute player on chat		x
/unmute	<targetPlayer, targetUUID>	Unmute player on chat		x
/tpall	-	Teleports all players to you		x
/kickall	<none, reason>	Kick all players from server		x
/broadcast	<message>	Broadcast message to all players		x
/endch	<none, targetPlayer>	Open your or other players enderchest		x
/suicide	<targetPlayer>	Suicide other players		x
/heal	<none, targetPlayer>	Heal yourself or other players		x
/gm	<0,1,2,3> <none, targetPlayer>	Change gamemode to yourself or others		x
/fly	<none, targetPlayer>	Change flying to yourself or others		x
/god	<none, targetPlayer>	Enable or disable player god mode		x
/hat	-	Put item in hand as hat		x
/speed	<speed> <none, targetPlayer>	Change player walk or fly speed		x
/up	<number>	Teleports you x blocks up or down		x
/tempban	<targetPlayer> <time> <reaon>	Ban player		x
/unban	<targetPlayer, targetUUID>	Unban player		x
/check	<bans,mutes>	Check players bans/mutes		x
/head	<targetPlayer> <none, amount>	Gives you player head		x
/invsee	<targetPlayer>	See player inventory		x
/repair	-	Repair item in your hand		x
-	-	-	-	-

Other:

Command	Arguments	Descrption	Player	Operator
/jafmreload	-	Reload mod data		x

If you would like a translation for your language to be included in the official release, just tell me in the comments, and I'll be more than happy to add it.

Currently there is support for:

English US

You can view the changelog for a release on it's file info page.

Ecentrix's Just A Few More Commands