Bukkit

Many functions like deactivating pvp, enter a roleplay mode which hides your name tag or respawning the ender dragon.

Jobs Reborn

FunnyGuilds is a fully customizable RPG plugin that allows you to create guilds

Guilds, war, land claiming, and user-controlled antigrief

MineResetLite

Adds new Enchantments to your Server.

Best plugin for manhunt (speedrunner vs hunter)!

An mcMMO themed plugin for horse role-playing.

Morph into any mob!

MobHunting provides a fun way to get money from hunting monsters

A visual and dynamic skill tree API for the easy setup of unique class systems

Allows players to have nicknames.

A plug-in that allows server owners/developers to create custom items with their own textures

This is a movement plugin like no other.

Drive in Minecraft

Unique and challenging custom achievements or quest-like objectives on your server! Books, fancy GUI, rankings, rewards, effects and more!

A better way to trade! For Citizens(2).

Simple plugin to let you know the damage you just caused to a mob, and how much health it has left.

Pick jobs earn money!

A party plugin for your server bukkit or spigot.