Love Parse but hate that it gets everywhere? That's why I wrote Parsley:herb:. It works much the way Mantle does.
You could also check out lazerwalker's MTLParseAdapter.
How to use 🌿:
All your models should be subclasses of JAMParseModel.
Your models need to conform to the JAMParseSerializer protocol. Much like Mantle, your models should return a dictionary that map the key values of your objects stored in parse, to the property values of your model objects.
It's a work in progress but, I've found it to be very helpful on my current side projects. If you have any issues let me know or submit a pull request.