Kavio

Plays a sound to all players when someone dies! (17-23 sounds + their variants)

Uses the "Silence Occasionally Broken by..." concept but with Minecraft sounds!

Put anything onto your head!

Adds an economy system for easier trading between players.

Lets you easily send your coordinates in chat for others to come along! (+features)

Allows you to pick up chests and barrels!

Allows you to store XP and repair your items more easily. (Multi brightness level interface)

Adds a craftable item that gives you nofall!

Makes it easier to put knots on your fences by using commands!