Bukkit

The best add-on for protectionstones

It can be easy to communicate

Simple announcement plugin with many features!

Make sure everyone knows if they use a word that GNU thinks they should avoid.

UltraHelpop

Displays a very compact, lucid and detailed list of all online players.

For a Server Setting view or edit Data Control

Nachrichten

Player Time Bar

A plugin that adds customizable messages for 30+ events!

Zepther

Provides users with answers to questions.

Sets the max players to 1 more then the current online players (Like Mineplex)

GuardBroadcast

aStaffChat

A simple way for server owners to stop players from spamming /afk

Displays information to a player as defined in a config

Basic informational commands that give player access to simple questions about server information! (Voting, Skype, YouTube .etc)

The Best Way To Broadcast In Minecraft (bungee-cord unsupported at this moment)

Get info about the player and holding item.