Bukkit

Scriptable, interactive citizens.

OfflineManager - Manage offline players with commands!

Keep your server running while mojang is offline, Supports all server versions!

Increase or decrease speed, sync worlds from different servers, display actual time and date ...

AFK

VT or Skript like plugin allow you from shallow functionality to deep access to the server itself.

With this plugin you can cut down an entire tree by breaking the bottom part!

MonsterIRC

iSafe

Hide and Seek! Disguise as Blocks, hunt out the hidden!

This is a plugin that let's you spawn Epic Bosses to fight!

Per world inventories and health

Report rule breakers

[CHAT] mChat v1.7.10_5 - Chat formatting plugin [1060]

Races and Classes for Craftbukkit

Adds loads of new firework related features!

Its a plugin, but its mod-like: New mechanics, new worlds, custom bows and strucutres, faster game, survival reinvented.

MarriagePlus

ReActions

Play Chess in the world of Minecraft!