Windows or Linux,A Comparison

Both Linux and Windows come in many versions. All the versions of Windows come from Microsoft(ie windows 95,windows 98,windows 2000,windows me,windows xp,windows 2003 server,windows vista etc..) and the various distributions of Linux come from different companies (i.e. Linspire, Red Hat, SuSE, Ubuntu, Xandros, Knoppix, Slackware, Lycoris, etc. ).Windows is not customizable in a way that Linux