Bukkit

Makes PVP fairer for newbies and players alike!

The best RPG plugin there is!

Lava survival, Survive the lava

TNTCannonDispensors

Adds more bars to Minecraft without spout!

Add herobrine to Minecraft!

Catch Minecraft mobs using eggs.

Intersections know the route to your destionation.

Jail++ is a fully-featured Jail plugin for Bukkit, and it's the official successor of Jail, JailLikeHell, and SimpleJail.

Team Fortress 2 Works on implementing Team Fortress 2 in Minecraft

Disguise as other players by putting on their mask!

GET A FLAMETHROWER

iRedstone

An extensive Zombie apocalypse minigame!

Utilize falling blocks!

An exciting new gamemode!

An amazing Plug-in, that has virtual ATM settings popping up on your screen easy access to all your money as well!

MRPG

Industrialize Minecraft!

Change the weather legit with a small cost!