The ZebraMap time zone map is a free, customizable map that you can use on its own or as part of a blog or web site. You can pick from twenty color schemes, add locations and position the labels. The map initially comes with ads at the bottom. If you would like to remove the ads from your map you can do so for a small fee.

Requirements: Modern Browsers with Javascript Enabled
Demo: http://www.zebramap.com/
License: License Free