My similar product (http://liveditor.com http://liveditor.com) mainly solves this problem: After tweaking css using Firebug, having to manually copy the changes

My similar product (http://liveditor.com http://liveditor.com) mainly solves this problem: After tweaking css using Firebug, having to manually copy the changes back to the source code is time-consuming and error-prone. And LIVEditor's solution is integrating a Firebug-inspired html inspector into a full-featured code editor, of course plus a Chromium-powered real-time preview!