When I saw some examples of great web applications built using Composer I found myself asking the wrong questions - "What widgets did you use to build that?" Asking this question is like admiring a great photograph and asking what camera they used. Composer does not put many constraints on a website designer, the magic is in the design, not the tools.
We have a guide that breaks down how this professional web application was created in Composer with just 8 common widgets:
https://developer.thingworx.com/resources/guides/mashup-widget-breakdown
