DFD is a nice, free (gpl) Windows program, belonging to the category Design & photography software with subcategory Flow Chart Diagrams.
More about DFD
Since we added this program to our catalog in 2011, it has already achieved 966,905 installations, and last week it gained 41 installations.
It's available for users with the operating system Windows 95 and previous versions, and you can download it in different languages such as English, Spanish, and Portuguese. Its current version is 1.1 and the latest update was on 5/19/2011.
About the download, DFD is a not that heavy software that doesn't take up as much free space than most software in the section Design & photography software. It's a software mostly downloaded in India, Mexico, and Indonesia.