For Windows users, this may be helpful for coding HTML/CSS when editing a landing page.
I use Notepad++ to edit code and have both IE and Firefox open to test compatibility.
Download www.Autohotkey.com and use the following script:
http://pastebin.com/mfqpXQMF
So now, when you hit Ctrl+S to save the HTML document, the browsers will automatically refresh.
Hope this helps you save time in the development phase 
http://livereload.com/
preferred tool for many webdevs on osx
works on mac and windows (alpha version)
Thanks,
That's my biggest annoyance with web coding right now.