KiCad is a useful, free (gpl) program only available for Windows, being part of the category Science & education software with subcategory Electronics.
More about KiCad
About the download, KiCad is a slick program that needs less free space than most software in the section Science & education software. It's very heavily used in many countries such as China, India, and Iraq.
It's available for users with the operating system Windows 2000 and prior versions, and you can download it in different languages such as English, Spanish, and German. The current version of the program is 40303 and it has been updated on 2/6/2011.
Since we added this software to our catalog in 2011, it has managed to reach 184,776 installations, and last week it achieved 21 installations.