I think many people will take a misleading view from this about who free software is written
Take the hypothetical case of the guy who wrote the widget allocator in the early 90s. It was
tweaked in 95 and 98 to be more stable, and largely replaced in 2000 with a faster version.
In 2004, it was rewritten to be fairer etc.
Looking at it in 2008, one concludes the widget allocator code was written in 2004 (probably
by some huge corporation). But *the work of developing a widget allocator* was not all done
in 2004. The 2004 work was just writing new code based on a working implementation (that the
rewriter calls brain damaged, fubar, etc.) and a decade of feedback.
This document accurately documents who is currently writing kernel code, but I think it would
be really interesting to see who *wrote* the kernel. Of course, that's harder research to do.
I haven't read this whole document, but if there's no caveat about misinterpretting the
findings, it might be worth adding one.
(I already posted this comment, but my formatting was poor so I think an LWN filter rightly