Indigo Studio

Indigo Studio lets you quickly and simply explores and creates functional, animated UI prototypes while maintaining the focus on user experience at every step. You can design storyboards in real-world context, quickly prototype application design interactions that integrate with your storyboards, annotate those designs, and share your best designs with team members and key stakeholders. What's more, you don't need to spend a fortune on incomplete prototyping and static wire framing tools. Indigo Studio does things better.

Requirements:

Microsoft Silverlight 5.0