Bukkit

Build proximity-based redstone triggers without buttons, levers, or pressure plates.

Display coordinates and time. Inspired by Coordinates HUD.

Motion Madness

A simple plugin that adds Elevators using Minecraft Signs

Spawn an illusioner when the player doesn't expect it

Have your players pay to switch their ranks!

Giants

Hoth generator

Patron allows users to pledge alliance to a patron and earn them XP.

Add unlimited custom textured backpacks to your server.

Destroy a glowstone with a pickaxe and get a block back

Sync your chests with SyncChest

Ever wanted to float around in zero-gravity, well now you can, with Enders Game!

A homes plugin very customizable.

Weapon batteries, torpedos and energy shields

BackAgain

controlling vine length and growth in various ways

Sore and pack your experience!

PortableTent

Teleport to a safe zone upon going AFK