SelectableTextBlock in JungleControls
SelectableTextBlock control in JungleControls library is like the standard TextBlock control except it allows text to be selected with the mouse.

Sample XAML:
<jc:SelectableTextBlock xmlns:jc="clr-namespace:JungleControls;assembly=JungleControls" Text="Some text" />
It is internally implemented as restyled TextBox, which means that some advanced properties of TextBlock are missing. Most basic formatting is however available as can be seen from the screenshot above.