Bukkit

WorldEdit is an in-game map editor for both creative and survival

WorldGuard

PermissionsEx

Vault is a Economy/Permission plugin for hooking into the various Economy and Permission plugins.

The Bukkit World Management Plugin.

A new perfect way to clear common lagg in your server!

Create modern looking holograms.

A collection of useful commands and features for server admins and players.

The essential plugin for Spigot servers.

NPCs for Bukkit

The most used authentication plugin for Spigot and CraftBukkit!

Set up custom villager shopkeepers

Dynamic web-based maps of your Bukkit/Spigot server

Portals module for Multiverse-Core

Open anyone's inventory as a chest in real time!

Plugin Manager For Bukkit

Grief Prevention

An intuitive and powerful plugin to create graphical user interfaces.

CS-CoreLib

Mine spawners with silk touch