The official SmugMug application is now available for Windows Phone 7.5 devices. The app allows you to browse and view the most popular photos from the SmugMug community.
If you have a (paid for) SmugMug account, you can log in and edit/upload photos from your Windows Phone 7.5 device too.
While SmugMug is a very similar service to 500px and Flickr, the overall quality of the snaps uploaded by the community is arguably better than the competitors. The filter and cropping options on the Windows Phone app are similar to Instagram and Picplz on Android and iOS.
The SmugMug application is available now for compatible devices on the Windows Phone Marketplace.
Source: Windows Phone Marketplace