Familiar to Python and web developers alike, DOM-style json parsing is the best way to read and write JSON files when you won't know the full structure beforehand.
Most json serializers for unity need you to serialize a whole class at once. What if you want to change just one variable? What if you're saving key-bindings for a user and you add a new one in your latest release? Are you going to scrap the user's whole file? Not anymore!
DOMJson lets you read and write variables to json files without creating a class beforehand. I've done all the hard work, just buy the asset and take the rest of the day off!