Bukkit

Clear inventories, potions effect, the public chat, and enderchest!

SP-Clans

Best Plugin Hider! Full of customization. Features: Custom command blocking, custom /help, per command block message and much more!

FlyMode - 1.13 Command support, ActionBar support, Customizable messages and Leave safety system

Adds motd and any other informative commands(customizable) you'd like

Assign texts to commands

MOTD is a lightweight motd, time vote and teleport plugin.

Ever needed that one thing to have against people asking for things? Now you do!

Broadcast messages perodically.

Anti Spam/Flood tool, Protects against bot DDOS attacks.

Change your chat!

FactionsChat

Adds a basic gang feature

Simple HelpOp gives your players a more detailed method of receiving help from staff

The plugin that has all commands that can run the server!

RealMotd

Counts your deaths. Simple stuff.

A small warning plugin

CussBlock stives to provide a way to run a clean family-friendy server

A server plugin and desktop client pair to help you admin your server even when not logged in.