2010年一季度，Windows Server安装在全球75.3%的服务器上，而Linux仅有20.8%，Unix则成为零头，只有3.6%，数据中Windows和Linux都有获得增长而Unix持续一个下降态势，以下是市占率列表：
Q1 2010 units
Windows 1,379,487 (75.3%)
Unix 65,451 (3.6%)
Linux 380,429 (20.8%)
Q4 2009 units
Windows 1,434,225 (73.9%)
Unix 84,851 ( 4.4%)
Linux 412,041 (21.2%)
Q1 2010 dollars
Windows $5.1 billion (48.9%)
Unix $2.3 billion (22.2%)
Linux $1.7 billion (16.2%)
Q4 2009 dollars
Windows $5.4 billion (41.6%)
Unix $3.9 billion (29.9%)
Linux $1.9 billion (14.7%)
A few more observations from IDC’s latest report: