Bukkit

Change Mob Spawner very easy with Keys

crm-profile

When a player is hit with a Cop Stick, it open their inventory

Allows players to change the names of entities and have them scroll.

Create custom explosions on different events

Essential to pvp servers, to prevent combat logging.

Plugin with a lot of functions

Anti-Basekilling

Remove a player's fall damage if they land on an entity of your choosing.

SpoutItems will let you change an item's appearance, using Spout.

Switch Between Creative And Survival!

Warlock

Make your Minecraft become harder

Giving max combat effects to players.

CustomBroadcast

sets the region using a regular block

Aggressively rearranges chunks sent to players to fill areas nearest to them first, and also limits the outgoing chunk rate

This plugin is a custom lobby!

PVListener is a powerful plugin to reward your players for their votes.

Bury those damn griefers!