The Hottest Web Apps
iStylr is a CSS and xhtml generator with a GUI interface.
Their service is free and can be used by both experienced coders and noobs. You pay for certain advanced features if you need them using a credit based system.
This neat little online tool will convert any PSD into CSS/XHTML automatically.
PSD2CSS is free and takes just seconds to convert any PSD. You simply have to make sure you name certain layers correctly according to their documentation. The whole process is done online and requires no download.