Bukkit

Get those pesky Password Cracker out of the way. with a 2-Step Verification System ( Google Authenticator )

The best event logger for Minecraft PERIOD.

Physical Region Protection

Extensible administration and security.

Blocks users building, attacking, or accessing stuff without permission

Security

Keep tabs on those sly admins

Adds permissions to build at a hight in 20 block intervals

Player controlled property sales and rentals

TicketManager - the plugin for organizing admin requests

Make sure other players aren't coming on using alts.

Light-weight plugin to disable Login, Logoff, and Death Messages.

Mobs will not target you!

Let''s you protect with style

Itemdetector

Atalk is a plugin inspired by the typical @-style admin chat of Counter-Strike: Source

A logging plugin that logs EVERYTHING

Issue warnings that will eventually issue a command to players.

Keep your most valuable items on death.

Block user spam and spambots with a simple to use tool!