"LinuxDevices.com's survey results consistently show Debian to be the most popular distribution among device developers. For example, our 2007 survey indicated that Debian was used in device-related projects by 13 percent of the survey's 932 participants, roughly double the score of MontaVista, the most popular strictly-embedded distribution.
"In addition to Debian's 13 percent score, Ubuntu, which is based on Debian packages, jumped to 6 percent this year, its first year in our survey. In contrast, Red Hat, achieved a 5 percent score and Fedora came in at 6 percent, while SUSE scored just 2 percent..."