Our desktop app Pinegrow Web Designer (http://pinegrow.com http://pinegrow.com) lets you open a webpage and play with its layout and styling, among other things

Our desktop app Pinegrow Web Designer (http://pinegrow.com http://pinegrow.com) lets you open a webpage and play with its layout and styling, among other things (main use is to compose the layout like you would in Jetstrap for example and then to also style the page). At the moment Less variables work only in site stylesheet. Giving you the access to Less variables for Bootstrap is in development pipeline.