GUAR

this plugin is of the authme and login security type that registers players on the server

This is a plugin for chat like Chatty or chatex

When killing a player under an invisibility potion, unknown is written in the chat instead of the killer's name

This plugin prevents people without permission from opening the ender chest.

this plugin makes it possible to sit on blocks using the /sit command

TetherVillagers – a lightweight Minecraft plugin that lets you leash villagers to keep them in place. Perfect for organizing villages and farms without letting villagers wander off.

SaveAndExit is a plugin for safely restarting a server with backups and maintenance mode.