Are there any existing tools/combination-of-tools I can use so that my wireframes built using pencil or balsamiq can be directly used by my application (grails) for rendering the UI? Or maybe a way to generate GSP's out of my wireframes (assuming there is a set style guide etc.)? I am essentially looking to do away with having to code the HTML/GSP for each and every page.
Napkee is a commercial solution. I don't know any completely free one, though