Selecting a Web Framework


I have used vaadin in two web application projects, and I am extremely happy with how it works!!
Howerver Vaadin is not the best fit for a Web Site mostly displaying content.
(The requirements for coocies is one drawback)

I am staring a new project now, and want to use vaadin for configuration / admin (backend)
The front end will only display content (possible to search)

Are there any good front end frameworks, working well with vaadin, directly or through a common DB ?

Thank you in advance for any suggestions!