Bukkit

Players can't modify items' slots.

Secure and lightweight authentication plugin for Bukkit/Spigot servers. Provides login/registration, session control, command blocking for unauthenticated players, and MySQL support.

Connect simply with the web/PHP

Reward players for visiting areas!

WorldGuard FlyStop

Tree Generator

Tell everyone a player is a derp!

Auto Level up based on total Exp

MagicCheckPoint

Change your gamemode easily.

change difficulty

easily create commands that can send users to different servers on your network

This is morePlus, with this you can create your own commands, items and enchantments! They can also interconnect!

A player region system using blocks

Adminify is the next step up to server administration, created by the founder of CommandBin, Adminify is the new replacement.

Ban Players with a Chest-GUI.

[ADMIN][COMMANDS] UsefulCMDs: A Collection of Useful Commands for Server Admins

Stops certain items from being dropped

This plugin allows you to change the colors of players names.

Be an admin - even while you're offline!