We show that Debian 2.2 includes more than 55,000,000
physical SLOC (almost twice than Red Hat 7.1, released about 8
months later), showing that the Debian development model (based on
the work of a large group of voluntary developers spread around the
world) is at least as capable as other development methods [...] It
is also shown that if Debian had been developed using traditional
proprietary methods, the COCOMO model estimates that its cost would
be close to $1.9 billion USD to develop Debian 2.2. In addition, we
offer both an analysis of the programming languages used in the
distribution (C amounts for about 70%, C++ for about 10%, LISP and
Shell are around 5%, with many others to follow), and the largest
packages (Mozilla, the Linux kernel, PM3, XFree86,
etc.)"
