Bukkit

Adds new Enchantments to your Server.

Unique and challenging custom achievements or quest-like objectives on your server! Books, fancy GUI, rankings, rewards, effects and more!

NBTEditor allows easy customization of entities and spawners. It also provides tools to manage other NBT related objects.

Jobs Reborn

Easy Warp is an easy and fast to setup way to warp throughout your server.

#1 Scoreboards plugin!

If you've ever used the VeinMiner mod for minecraft Forge, it has now been recreated for Bukkit, CraftBukkit, and Spigot

Claim land of any shape, not just within a chunk

LobbyCompass is a plugin where you have a compass, which opens an inventory with warp points or commands to a set location or server.

PrisonUtils

Destroy lots of wood by breaking one

Multiverse Inventories allows you to control who and what can cross world borders!

Have minecraft read the chat to you

BackAgain

Gives the ability to cut down trees at once. Just like Timber mod.

Hide from your players! Invisibility for the distinguished gentleman.

Get slimefun dusts from breaking ores!

Players in creative can 1-hit-kill mobs when crouching

Limits amount of creater spawns via limits set by config

Destroy others beds with bedwars reloaded