jQlouds (jQuery Clouds) is a simple jQuery plugin to create many cute and flat animated clouds dynamically in your page.
Just call jQlouds() to your sky container, few jQlouds options available: maxWidth (Clouds image size), maxHeight, minClouds (Clouds amount), maxClouds, skyHeight and wind (slightly floating animation). Create a cloudy sky in your apps now, its free and open source!
Thanks Enrico Deleo the author of this cute sky clouds script for free!
jQlouds is released under MIT license.
Cost: FREE
Requirement: jQuery
Source: Read more about jQlouds