Bukkit

Achievements 2.0

ToxicClouds /help, /website and basic commands plugin.

Track that player!

ItemSaver allows you to give each and every player (providing they have the permission) access to a private storage.

It can be easy to communicate

UltraHelpop

SkinDownloader

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

Player Time Bar

Simple change of the message in the list of servers and fake online for Minecraft servers

Provides users with answers to questions.

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.

Keep track of players kills and deaths

A lightweight way to warn your players.

Tells players "Welcome to our server!" every time they join

Hashtags is a fun Plugin which adds Hashtags to Minecraft

ColorCodes gives the player a list of chat color codes.