Sorry to be somewhat off-topic, but I have a Friday-afternoon sort of question which Hurd people can probably help me answer: what open-source operating systems exist today?
By "operating system" I mean something that provides at the very least preemptive multitasking, and by "exist" I mean either fully functional or working to a reasonable extent and being actively developed. I know about Linux, Hurd, VSTa and several BSD derivatives. If you know of any others, e-mail me. Please don't reply to the list as your reply would be even more off topic than this question and I would be embarassed by any annoyance indirectly caused by my original enquiry, but I will post a summary. http://www.cs.arizona.edu/people/bridges/os/free.html has an interesting little list, but some of the links are broken, and most of the items listed are vapourware, I think. Edmund

