Awesome

OpenRPG_Inventory

Component based, add items container functionality to any actor you want!
Comes with 3 types of containers implemented: player inventory, storage and shop.
Extremely flexible to add/modify custom functionality per container type using component inheritance.
Easy to use component API: Add Item(s), Remove Item(s), Swap, Split, Stack, Transfer, Drop...
Data driven items from DataTable (10+ example items).
Supports different types of items (consumable, equipment, material, quest, miscellaneous and loot).
Rich features set per item with 15+ properties (name, description, type, rarity, usable, stackable, shop value, droppable, etc).
Create your own containers (chests, sellers, lootable monsters, etc).
Easy to set custom functionality per item.
Supports items Drag&Drop functionality (between different containers or in the same container).
Built-in save and load system (disk file and game session persistence).
Clean UI examples.
Extremely easy to integrate into your project.

Integrated with inventory system keeping dependencies to the minimum.
Easy to integrate into your character (just 1 actor component).
Data driven equipment data from DataTable (5+ examples).
Supports multiple slot types (armor, helmet, boots, shield, weapon, etc).
Equip and unequip from any items container (not only player inventory, for example directly from storage).
Supports simple click and Drag&Drop functionality.
Supports item swapping from items containers (no need to unequip and then equip).
Drop from equipment slot directly to the world.
Built-in save and load functionality.

You can find full documentation and tutorials about the system here. Im already writing it im my free time so there will be a lot of things missing.