They released some of it under a look-but-don't-touch license for a while, in an attempt to build a community, and you could get a free license for the desktop version of QNX (with all the developer tools in it). I think I still have a CD somewhere. It worked pretty well.
It may even be still available, but after digging up my old Foundry27 username and password (which, surprisingly, still works), their download site is an impossible trainwreck and I was unable to find it any more.
It may even be still available, but after digging up my old Foundry27 username and password (which, surprisingly, still works), their download site is an impossible trainwreck and I was unable to find it any more.
The demo floppy, by the way, is here:
http://toastytech.com/guis/qnxdemo.html
Requires a 386 and 8MB of RAM.