Code Quality: Windows vs Linux vs FreeBSD vs Solaris

has written a good paper for the “30th International Conference on Software
Engineering” (ICSE ’08)
that looks at the code quality of the source codes of Windows (WRK –
Research Kernel based on Windows Server 2003), Linux, Solaris and FreeBSD.
Diomidis has analyzed the source codes of these 4 kernels and uses some code
metrics, in order to measure the quality of each kernel in each area.

For those, who don’t like reading lengthy texts, a summary
of the results is at the end (section 5: summary and discussion). Each operating system has its own strengths and weaknesses, so there is no clear winner.

The paper can be found at
and all the queries for the code analysis can be found at

Finally, Diomidis has a very lengthy list of classic reads at his website.

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