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.

The most used authentication plugin for Spigot and CraftBukkit!

EssentialsX

Plugin Manager For Bukkit

Mine spawners with silk touch

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

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

Tablist

Dynamic web-based maps of your Bukkit/Spigot server

**Not Maintained** Display colors and text on name tags above the head.

The best chest&sign shop system for Bukkit

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

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