PReview facilitates GitHub Pull Request reviews from within Visual Studio 2015.

!!! This is will be integrated in GitHub Extension for Visual Studio, see here !!!

• Filter Visual Studio Solution Explorer using GitHub Pull Request diff file
• Show file differences in the margin

!!! At the moment you need to

• Get your pull request diff file, navigate to the Pull Request url in any web browser and add .diff at the end of the url
• Save the page in your solution folder with filename diff.txt
• Click the Pull Request Filter button

Using Git and Visual Studio? Have a look to Git Diff Margin