www.dwheeler.com . units of server per enterprise increased by 2.5-fold from 5.3 units to 13.4 units. Second, note the support of GNU/Linux servers by vendors: System Year 2002 Support Windows NT/2000 Server 66.7% Linux server 49.3% Commercial Unix server 38.0% This is the rate of vendors that develop or sale products supporting Linux server; note that Linux is already a major OS when compared with its competitors. The reasons for supporting Linux server were also surveyed, which turn out to be different than the reasons in some other counties (for a contrast, see the European FLOSS report): Increase of importance in the future 44.1% Requirement from their customers 41.2% Major OS in their