What is Xamlr?
Xamlr is a Xaml formatteR extension for Visual Studio version 2015 CTP that enables WPF developers to work with their XAML files more effectively; both on an individual basis and as part of a team. It does this by overriding the inbuilt formatting logic for XAML files to produce beautiful, easy to read and easy to merge XAML at lightning speed.
How do I use Xamlr?
Tip you can disable format on save in Tools --> Options --> Xamlr and format using the Visual Studio document formatting command: you will probably find that CTRL K, D or CTRL E, D is a good shortcut combination.
See https://xamlr.codeplex.com for more details.