Bukkit

Easily prevent use of Range Hack or Kill Aura

InvisibilityDust

LobbyEssentials will turn any of your worlds into a lobby!

Stops TNT, test project.

Control what players can do while flying

LokiHide

Chatlogger

Good Chat for a good server

Allows flight but not Creative or the other way round.

Lightweight block-logging for heroes!

NoSpy prevent snooping of your own plugins by other players. It blocks optional and adjustable commands and even the tab auto-completion is blocked in special cases. This keeps the plugins that a server uses secretly and there are less mimicers.

EntityProtect

Allows you to loopkill players (Kills them over and over with no mercy)

Kicks users connecting through a proxy

silk touch ice, no longer overpowered!

The free anti-cheat

Login System

The Enjoyable Anti-Griefing Solution

Slammer

This plugin stops players from teleporting minecarts, monsters and other entities into spawn using End Portals.