What is difference between FreeBSD 5.5 and 6.1?

[Tom King]

What is difference between FreeBSD 5.5 and 6.1?

Why two new versions at same time?

Is FreeBSD Unix, Linux or something elese?

Do Solaris programs or Linux graphical programs run on FreeBSD?

Does it make more sense to port from Windows directly to Mac OS X or to  
FreeBSD first?

What is the development framework and IDE of choice for FreeBSD  
develoopment (Eclipse, NetBeans, Trolltech, etc.)?

What does FreeBSD offer over Solaris and/or Red Hat Linux?

Thanks!


Tom King
tom at tomking.com
713-702-5578