Bukkit

Ultimate Core is all you need to setup a server and more.

SimpleClans

CrazyLogin

A plugin that adds new custom enchants to your server

replacement for faction chat with faction 1.7.8+

Add prefixes and suffixes

Schedule configurable server wide broadcasts easily

Well-praised PvP minigame your server NEEDS!

A fully customizable and open-source DayZ/MineZ post-apocalyptic Minecraft plugin.

InGameMotd - MOTD

Light weight and easy to use!

Allows players to have nicknames.

FunMessages

A chat-based version of workbenches, chests, furnaces, brewing stands and enchantment tables.

A simple plugin to handle permissions, groups, prefixes and suffixes with GUI and Web Interface

Seeing light in your darkest hour

This plugin allows you announce/send Actionbar as message or on join/firstjoin (also ANIMATED ACTIONBAR)

PurpleIRC

Simple Plugin, which brings Colors to the Tab List (Playerlist)!

Run scripts on triggers such as Walk, Click, PlayerDeath, Respawn, BlockBreak & many others. Use Object Variables, IF & ELSE.