Bukkit

Lock every command with extra permissions! (/plugins, /warp vip, /kill)

Warp

An additional security plugin alongside PEX, /ban and Co. | More than just a plugin.

LightFixer

1.9+ plugin that tries to prevent boats from sinking

Override /server

Deal with LeaveSpammers.

Prevent players in freecam from interacting through walls.

Mob Drop Stopper

Anti Plugin Command

GlitchPatcher

ExpMiner

AntiSeePlugins is a plugin that says a personalized message when you type some commands like /pl, /?, etc

A lightweight, handy, fully-configurable Paper plugin that serves as core-plugin for anarchy servers.

Archer

Direct drops to player inventories

Effective RAM Cleaner for Servers

Allows you to set your flight and walking speed, to up to 10 times the default

Advanced Shulkerboxes

Back up your worlds / server files without affecting your server performance!