For basic drop shadow work, the Paint.NET Effect plug-in is a must-have for any amateur image editor. It does exactly what it says it will do without any form of fault.

Use GIMP to add a Shadow Effect to Text or Images to give a beautiful look. Learn how to add Shadow to Text or Image in GIMP.

References CSS3 Info: Box-Shadow, One of CSS3′s Best New Features Advertisement Article continues below this ad Contributor ...