Suggest an alternative to

Callisto

A control toolkit for Windows 8 XAML applications. Contains some UI controls to make it easier to create Windows UI style apps for the Windows Store in accordance with Windows UI guidelines.

Why do you think that https://github.com/MahApps/MahApps.Metro is a good alternative to Callisto

A URL to the alternative repo (e.g. GitHub, GitLab)

Here you can share your experience with the project you are suggesting or its comparison with Callisto. Optional.

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