MCNEXT 

Helper methods, bindings, and animations

Custom navigator control that adds new event model and page features

Control for managing an extended splash screen in WinRT apps

navigation control in a side flyout

Control and css framework for handling data forms with validation

Control to display items in a grid way (horizontal or vertical). Supports several layout options

Helps manage datasources with grouping and provide a control to wrap listview with grouping and semantic zoom

custom Hub Control relying on WinJSContrib navigator control

Tab control based on html fragments

Interface to handle logging work

Control for a sliding effect on swipe. It helps building navigation or custom controls behaving like a flipview.

Control to show progress indicator on a page or globally in the application

helpers and bindings for dates

search engine to index and search content locally

Wrapper for communication between main code web workers or iframes

control to manage ListView layouts in your markup instead of code

Control to provide page-like navigation with FlipView

control implementing semantic zoom interface. It's usefull for wrapping custom controls in a SemanticZoom control

Control wrap Pivot control of WinJS to provide sliding effect on swipe on Cordova apps.

wrapper and helpers around background downloads and uploads for WinRT apps