Bukkit

Vault is a Economy/Permission plugin for hooking into the various Economy and Permission plugins.

WorldEdit is an in-game map editor for both creative and survival

WorldGuard

PermissionsEx

A collection of useful commands and features for server admins and players.

A new perfect way to clear common lagg in your server!

Create modern-looking holograms in Minecraft.

The Bukkit World Management Plugin.

EssentialsX

The most used authentication plugin for Spigot and CraftBukkit!

Plugin Manager For Bukkit

Dynamic web-based maps of your Bukkit/Spigot server

A simple to use and powerful plugin to create user interfaces.

Mine spawners with silk touch

Allows server admins to easily modify how Minecraft works without programming anything

Tablist

Grief Prevention

The premier long-range map editing tool for Minecraft SMP.

The best chest&sign shop system for Bukkit

Easily add commands to NPC's! [1.8-1.12] (BungeeCord Support | Citizens 2)