Tiered Items
Randomly generated items with support for hundreds of tiers and gobs of customization.
MythicDrops
Action RPG drops in Minecraft
Custom Items
Items made by you by hand for your own server, dropped from mobs.
Unidentified Items
An ARPG classic - items can drop unidentified and need an Identity Tome to uncover their secrets.
Socket Gems
Another ARPG classic - apply potion effects when you hit your enemy with a sword, gain regeneration when hit by your foes. The possibilities are only limited by Minecraft potion effects and your imagination.