I don't really understand why not use it on desktop though (besides the fact there are not much relevant desktop apps available). According to my feel QNX 6 was

I don't really understand why not use it on desktop though (besides the fact there are not much relevant desktop apps available). According to my feel QNX 6 was by far the best OS I ever ran on my desktop. Fast as hell, ubreakably reliable, visually beautiful and featuring an awesome Visual RAD C++ app builder out of the box. Ok, there are not much apps and games - that's a wicked circle. But what seems really weird to me is why do nuclear power plants and critical oil infrastructure (as hacked recently) use Windows when there is QNX.