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* Matt Raible: Top 5 UI framework http://www.slideshare.net/mraible/comparing-jvm-web-frameworks-tssjs-2011 (Grails,Rails incl)
* Vaadin scalability study: http://vaadin.com/blog/-/blogs/vaadin-scalability-study-quicktickets
Mobile
Vaadin touch
Sencha
ExtJS: 500-600$/dev
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