You are most likely thinking of QNX 6.5.0. That was the last version of QNX to include Photon, which was QNX's equivalent of X11. QNX no longer includes a deskt

You are most likely thinking of QNX 6.5.0. That was the last version of QNX to include Photon, which was QNX's equivalent of X11. QNX no longer includes a desktop; its graphics stack is engineered solely for use by eg Qt apps (the equivalent of Qt using /dev/fb* on Linux). For what it's worth, QNX <7 is similar to Windows XP - not the latest version, but very much in active use, and definitely not abandonware. My interest in QNX is solely academic/hobbyist; I actually keep QNX 4.25 and 6.5.0 open in QEMU in the background and VNC to them occasionally for fun. (4.25 uses 1.3% and 6.5.0 uses ~5% CPU if I don't pause qemu.) Finding older versions of QNX is a small challenge; getting them working is also Fun™. For reference, my email is in my profile. For reference, older versions of QNX may not work well on newer hardware, unfortunately.