v1x writes "An article at OpenSolaris examines three of the basic subsystems of the kernel and compares implementation between Solaris 10, Linux 2.6, and FreeBSD 5.3. From the article: 'Solaris, FreeBSD, and Linux are obviously benefiting from each other. With Solaris going open source, I expect this to continue at a faster rate. My impression is that change is most rapid in Linux. The benefits of this are that new technology has a quick incorporation into the system.'"