...Detailed project description is available in the README file: http://vboxsvc.svn.sourceforge.net/viewvc/vboxsvc/usr/share/doc/vboxsvc/README-vboxsvc.txt
Discuss and get help in VirtualBox Forum thread "[Free as in beer] SMF service for VirtualBox VM's": https://forums.virtualbox.org/viewtopic.php?f=11&t=33249
A replica is hosted (and would likely be the HEAD of development soon) at https://github.com/jimklimov/vboxsvc
See also https://github.com/jimklimov/vboxconfig_sh.git for tweaks needed to set up Oracle VirtualBox for Solaris packages (4.x, 5.0.x) on illumos hosts. For recent OpenIndiana and OmniOS (since 2019) there are packages provided by distributions, and these tweaks are not required then.