I'm glad you found it useful!

I'm not affiliated with the site; just came across it this afternoon.

If you're looking for actual non-web apps and you're on a Mac, there's Cactus and Blocs.

http://lancecore.vsco.co is me.

I just played around with the demo very briefly, and the generated code seems to be clean and well organized. A couple of the elements I added could use some tweaking when it comes to responsiveness.

If nothing else, this looks like a nice, quick option for prototyping, or throwing together a landing page or similar.

I started using Airmail on my Macbook once Apple's Mail app started being ridiculously slow for me.

On anything mobile, I use the Gmail app, again because of an issue with the Mail app: I have to manually go to my inbox for it to mark as read messages that I've read elsewhere.

Firefox can do it. Tools > Web Developer > Developer Toolbar, then type "screenshot --fullpage".