Wisegeek
Brief and straightforward guide: what are software skins?
http://www.wisegeek.com/what-are-software-skins.htm
Windowblinds
Official site. stardock is a cutting-edge innovator specializing in desktop utility software and pc entertainment.
http://www.windowblinds.net
Madcapsoftware
Give your flare (version 2.0 or newer) web output a new look by updating its skin. to add one of the skins below, please follow these steps:
http://www.madcapsoftware.com/downloads/flareskingallery.aspx
Alienskin
Alien skin software is the developer of eye candy, blow up, exposure, bokeh, image doctor, snap art and other award-winning photoshop plug-ins for photographers and graphic designers.
http://www.alienskin.com
Overload skins
Cool skins and wallpapers
http://www.overloadskins.cjb.net/
Virtualdj
Virtual dj software, mp3 and video mix software. virtualdj provides instant bpm beat matching, synchronized sampler, scratch, automatic seamless loops and remixing functions, effects, and much more...
http://www.virtualdj.com/addons/index.html
The Unleashed
Freeware palm: daily updated site for freeware files on palm
http://www.theunleashed.com/