Here you can download our free and open source Odin Serializer.
You don't need to download this package if you already own Odin Inspector as Odin Serializer is already included in that.
This download will generate a unitypackage directly from the github repository, add assembly definitions to it, modify the code with a custom namespace of your choosing and
generate unique asset guids based on your desired namespace to avoid any conflicts with other assets that include Odin Serializer.
