Bukkit

Used to heal players.

Plugin used for storing player data and other data

The oldest rollback system for Bukkit

This plugin offers a great economy!

Extensible administration and security.

sorting algorithm visualization in minecraft

Easy to use TPS Plugin

OpMeAdmin

GetCommand

Use a command, and single password to give yourself temporary OP.

Anti ForceOP

GUI for basic player/admin server controls!

NewDevAPI

This is a plugin to block commands like /stop that should be only allowed for use by Console.

Common utilities and tools for PoiXson plugins

A plugin that adds a /playsound command from minecraft 1.6 to minecraft 1.5

A plugin to identify the ItemID of a block/item

A powerful permissions system addon for Essentials/PEX/etc

The next step in simple inter-server plugin communication

DiscordLogs as lightweigt plugin