In this talk, I'd like to walk through some of the more technical parts of SailfishOS (www.sailfishos.org). Recently, Jolla (www.jolla.com) has shipped a mobile device based on the typical GNU/Linux stack together with new technologies such as Qt5 and Wayland. Information is presented such as how factual contribution to the open source parts of SailfishOS is done, with projects such as Mer Core and Nemo Mobile in the picture plus a walk-through of some of the more exotic pieces such as the ability to leverage Android hardware adaptations for Wayland based systems, through libhybris.