I'll give it to you, but in the future editing the posts you've made guesses in or posting a bunch of guesses in the one post is poor form, anyone can roll off a long list of OSes.
______________________________ 1000
______________________________ 750
______________________________ 500
______________________________ 300
______________________________ 250
______________________________ 175
Windows For Workgroups 3.11_____ 150
______________________________ 150
Windows 98 SE_________________ 100
Windows NT Workstation 4.0______ 100
Windows XP Professional__________ 25
Linux? And I'm sure that doesn't need a build name! Like Ubuntu etc. Linux should be enough!
Nope, I'll need a distro name that is on the list.
In ~30 minutes I'll post the first letter of the remaining OSes.