Bukkit

CountryExceptions

hide your map seed

Freeze those pesky players!

iWarn

This Is a Simple Plugin To Stop People Using /stop

TNTnotifierX

AntiEnderChest

PatchedNether

Protects against the new hacked client attack with glitched signs.

Kills players that go on the nether roof.

NoSpace

ChestRestrict

very cool

Provides players with a means of reporting undesired behavior to administrators

No damage to blocks on explosions from creepers

FusionChildlot

Make mobs on your server ignore guest users.

Makes the existance of 1 x 1 towers nonexistant

Allows admins to ban blocks and items from being placed, used or shot out of a dispenser.

BoundItems