TinyCAD is a good, free software only available for Windows, being part of the category Science & education software with subcategory Electronics.
More about TinyCAD
Since the program joined our selection of software and apps in 2011, it has already achieved 121,135 downloads, and last week it gained 45 downloads.
It's available for users with the operating system Windows 98 and prior versions, and it is only available in English. Its current version is 2.60.01 and was updated on 5/27/2011.
About the download, TinyCAD is a slick software that will require less space than most programs in the section Science & education software. It's very heavily used in some countries such as United States, Turkey, and India.