
1) Custom firmware 2) Free software programmed in C 3) Free software project
Found on
https://www.crosswordclues.com/clue/ipodlinux

iPodLinux is a µClinux-based Linux distribution designed specifically to run on Apple Inc.`s iPod. When the iPodLinux kernel is booted it takes the place of Apple`s iPod operating system and automatically loads Podzilla, an alternative GUI and launcher for a number of additional included programs such as a video player, an image viewer, a comma.....
Found on
http://en.wikipedia.org/wiki/IPodLinux
No exact match found.