Bukkit

A simple shout plugin that lets your users do /shout <message>

A plugin to make all items unbreakable.

PimpSlap, Slap your players like a pimp

Modify the maximum stack sizes of items.

Create a note of what you're thinking about to remind yourself of it later. Now with teleportation.

McBansJocker

Land flattening and area manipulation

Limit your user's commands!

SignWithLink

Description Tells it All!

A Bukkit plugin that adds a good leveling system.

Host a Discord Bot directly from your 1.9 server!

Send commands and messages as other players.

CommandsGuard

Everything you need for optimal server running.

A Plugin with that you can use the command /ec to open your EnderChest and /craft to open a CraftingTable. As an Operator, you can also open the Inventories and Enderchests of the other players.

Improves performance by tweaking mob despawn rules. Say bye to pesky unintentional persistent mobs.

Anti1k

SurvivalFlight

Commands-Plus