Bukkit

Allow for dynamic and custom client server list and login MOTDs

Shout

xScores

The next-generation plugin that will be alternatives to Essentials and CommandBook

ButtonWarpRandom is an extension to ButtonWarp were you can add warps to random locations within a specific radius

HelpKit

GetID

The ultimate solution to welcoming your players!

Logs chat with a time stamp and records it into text files

SMP

This plugin is for broadcasting of random messages(CONFIGURABLE)

A plugin to manage manual point definitions for Minecraft Overviewer from within the Minecraft client.

A plugin for saving server logs.

Broadcast messages perodically.

Better Horse Breeding

eSuite

Plugin that allows you to see players' coordinates

A simple soup refill inventory for your server!

iMC Bans is a Bukkit plugin for having one list of banned players for all servers

If your users refer somebody successful, they get rewards (everything configurable)