 Just how widely OpenBSD is used is hard to determine as its developers do not publish or collect usage statistics . In September 2005 , the BSD Certification Group performed a usage survey which revealed that 32 @.@ 8 % of BSD users ( 1420 of <unk> respondents ) were using OpenBSD , placing it second out of the four major BSD variants , behind FreeBSD with 77 % and ahead of NetBSD with 16 @.@ 3 % . 
