Bukkit

Pokemon-Minecraft Edition

AntiSpam

Invisibility Potion Block

Issue Console Commands Over HTTP

Voter: Find out where to vote!

Message Of The Day!

Installs & Updates plugins automatically

A centralized ban service for server owners with multiple servers.

BlockIt - The Block Banning System

Forbid your players /plugins and /version

WorldBan

Curse

All sorts of TNT-related features, from bazookas to booby trapped chests! Perfect for war servers! Excitement +1

Have fun with some FUN!

Greylist, a simple solution to griefing. Not an open server, nor a whitelisted one. Halfway in-between.

Alows server owners to manage what commands can be used in what worlds

Team Fortress 2 Works on implementing Team Fortress 2 in Minecraft

Teleports the player to a random location within 500 blocks!

Holograms

Modbot