Bukkit

AutoReplant is a plugin that replant automaticly seed when they are broke

Clans is a plugin that allow creating Factions

UHC pluging, extend Kill the sleeper mode

OneShootChest is a simple plugin that destruct chest and their content when their close

SafeTnt is a plugin that allow you to chose what TNT can and cannot destroy

MineRPG is a plugin that add a RPG overlay to minecraft and provide an Api