The Inventory Engine is very simple in use and fast in learning. It uses JSON files as a database, so you can easily add, change and remove any parameters. It is divided on 4 parts (Inventory System, Craft System, Storage System, Equip System), so you can easily add/remove inventory features you want. All scripts are written on C# and have comments.
About | Cool Documentation | Demo
Feature list:
• Drag and drop items
• Collect items
• Throw items away
• Stack and split items
• Swap items
• Craft items
• Equip items
• Store items in storages
• See item tips
• Create items
• Save items in Player Prefs
• Create recipes for crafting
• Minimal demo scene
• Open/Close the inventory interface