Bukkit

Allows use of command to speed up smelting

Slimefun 4 newest version but now you are able to use it in your Aternos server

SignLogger

EasyAntiSpam

SMP Framework for Instanced Challenge Maps

Play Slender On Minecraft!

SignTips

SetSkin

Synchronizes game time with server time

Have a sign tell you who is on and off

Take off and soar

HelloWorld Server Chat Plugin

A bukkit version of SethBling's deathswap.

A plugin that keeps worlds to a certain time of day.

GodLogin

Metropolis generates a protected city for your users and assigns them homes.

You can't disguise forever!

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

You can convert formatting code between "section symbol" and "ampersand" in command block commands.

Feeling cocky? Need to over-glorify oneself?