Bukkit

Aplugin that restore pre-1.8 biomes in the selected radius, stopping the "snow in desert problem".

Skygrid map generator

Load non-default worlds and run commands when your server loads

Use signs and redstone power to change block IDs and damage

A simple world teleportation and world management tool

Disables water and lava spreading to make building flying sources easier

This plugin lets you make floating blocks that look very impressive and unique for your server!

This plugin allows you to completely disable the functionality of the void!

Hard-link nether portals to exact destinations — no more vanilla portal roulette. Built for chunk loaders, orbital cannons & precise portal networks.

A quick and easy way to stop players from building 1-block pillars!

BlockUndo is a block rollback plugin

Make ender dimension SSP like for players

An advanced sign based system for mechanisms in Minecraft. Written in Ruby.

CatOwner

Iron Land Mines - Step on an iron pressure plate and go BOOM!

A simple teleportation plugin.

Replace block with mob spawner of type, or determine type of clicked on.

DedicatedSlots

Allows you to customize your tablist.

ThatRegionPlugin