A powerful WorldManagement plugin which rivals Multiverse is (now with warp efficient portals). WCM allows you to control what can and cannot happen in any world and many more features are at your disopal. WorldControlManager is basically all the Multiverse plugins in one and runs without harming server lag or tps.

Moved to Spigot: == https://www.spigotmc.org/resources/worldcontrolmanager.17841/

Features

Enderchests per world
Have signs that show how many players are in the world, if its loaded or not and a world teleport sign.
Whitelist worlds to certain players.
Have chat enabled on certain worlds.
Have certain mobs spawn.
Have certain commands that can be used.
Have certain blocks that can be placed or broken.
Disable pvp.
Copy worlds.
Load and unload worlds.
Save worlds.
Create new worlds.
Load certain worlds on plugin startup.
List worlds the that WorldControl should ignore.
Decent debug system for Developers.
Set a certain player limit for world (Use -1 to have no player limit in the config)
If something happens there is a fallback world option.
Allows players or mobs to become invincible in certain worlds.
Allows whether players or mobs drop their loot or exp.
Disable nether portal creation and usage per world.
Limit mobs per world.
Disable explosions per world.
Disable player interaction with anything per world.
Can send titles upon world join per world (1.8 Users only, won't send anything if you are a 1.7 user)
Uses Hidendra metrics system which can be disabled in the config.yml by setting opt-out to false.
Metric system sends anonymous info like: Server Version, Number of players, Java version.
Uses auto-update which can be disabled in the config.yml by setting auto-update to false
You can now use and create portals!
You can set permissions to allow players to only accecs certain worlds.
Added per world default gamemodes.
You can use an ingame config editor (only via commands)
You can now have inventory per world also can have per gamemode inventories.
You can now fully delete worlds with the server online.
You can now see what players placed or broke blocks!
Disable a player's hunger from changing in an given world.
Disable leaf decay in an given world.

Donate:

I have taken my time to make you guys this plugin, even some of my precious holiday time so if you would like to help me out, please donate down below.