Editor Native Database

This asset allows you to create and edit databases directly in Unity Editor.
FEATURES:
• User friendly interface and workflow.
• Only one editor window is used.
• Database entries are stored in containers that are similar to folders in a file system. You can organize your database using container tree and don't have to put every entry in database root.
• Every entry is stored as a scriptable object, so you can easily find, reference and use them.
• You can import any scriptable object from your project as a new entry in database.
• Custom property attribute that allows you to preview any sprite or texture when you select a database entry.
• Example scene with event system based on scriptable objects. Selecting an event in database shows you prefabs and game objects that raise and listen to the event.
Forum link.