Bukkit

Place water in the nether.

BasicWarps

Showcase and sell items!

See Cmds

SimpleGM - Change you gamemode with ease!

MuteMan - ultimate mute and anti-swear system

Inspect a player inventory/armour/off-hand/ with a custom gui / Finvsee

Allows players to vanish from view and online list

A plugin that will automatically re-spawn players after a certain period of time.

Build and maintain an automatic digging and track laying machine!

Makes sleeping in multiplayer fun and useful

A small and simple mail plugin using SQLite, allowing users to leave messages for each other.

Slimes are boring, and too easy to kill. Sticky Slimes lets slimes harness their sticky properties to slow you down.

nothingtodointheconfig

Duels

Get potion effects by walking over a block!

Easy to use (offline-mode) login authentication plugin

Revive

Sharing will allow you to feed or heal a player using commands alone or in conjunction with items.

PotionArrows