Vapor Trails is an animated desktop wallpaper app of planes flying at high altitude where the planes leave a vapor trail.
I love looking up at the sky and watch passenger planes leave white vapor trail (contrails) in their path. This app, in its small way, simulates that look on your desktop.
Vapor Trails requires Mac OS X Snow Leopard (10.6) or Lion (10.7)
➜ Runs transparently over your wallpaper.
➜ Appears on all Spaces screens
➜ Have it start automatically at startup at log in
➜ Does not require a a lot of processor power.
➜ Select the number of planes to your liking.
➜ Set the length of the vapor trails
➜ Set the wind direction