Bukkit

Send global messages at a given interval

CoMessageModify

Clears the player's inventory without a message

A simple way to manage 'Hunger Games' events without needing Permissions.

a plugin for logging in even if the server is full

TooManyCaps allows you to set limits on how many capital letters players can use in messages.

DevUtility

IceVotes

Give players hearts!

Randomness

Easily find the ping between you and the server!

EffectInfo

Plugin for offline servers* that moderate player names

legacy pvp on 1.9 minecraft

Copies the blocks in area selected to were you look

Logs a players enchantments to a file.

A lightweight Plugin to log the Chat extern - so you don't have all the Info Messages from the Plugins.

A kill plugin with Advanced Features

You can change the distance over which players can talk to each other.

KillStreak