QNX had been around since the 80’s. I’ve learned C on it.
IIRC it also used some Qt tooling for UI description that helped a lot. It was a very neat toolset for native development. That and the fact it ran Android apps better than Android thanks to the QNX kernel made it a very appealing platform.
Nope. They acquired QNX. BB10 is based on QNX, which has been around for far longer than Blackberry and is the most solid OS I’ve ever used.