QNX is still going strong even with Blackberry. I worked at a company recently that heavily relied on QNX for safety critical embedded OS projects. It's Qt and

QNX is still going strong even with Blackberry. I worked at a company recently that heavily relied on QNX for safety critical embedded OS projects. It's Qt and QML integration made rapid prototyping a snap. Unfortunately it requires pretty (relatively) hefty processors so I never personally got to use it.