We recently had the chance to spend time with David Greaves and Vesa-Matti Hartikainen of Jolla and take Sailfish OS for a spin. As you might recall, this open source mobile OS builds upon Mer (a fork of MeeGo that includes Qt) and uses the Nemo framework with a custom UI. Like any decent Linux-based OS, it supports both ARM and x86 devices. The company is also behind the Sailfish SDK which is in
