Arduino boards only have headers that are convenient for shields and wire jumpers to connect to breadboard. But sometimes you just need a fast way to connect to some sort of component which is in SMT package. SARduino (Space-Age-Robotics-duino) was built with this in mind. Firs of all it is not and Arduino shaped, so it won’t fit shields. But it has bit prototyping area where components can be soldered directly on board. And this is not only for through hole, but also for SMT parts.
There can be various devices soldered like SOIC-16, SOT23-6, SC-70-6. This is really nice solution for prototyping and even for end design if you wish.