Sony’s Cinema Line cameras all have the ability to record metadata from inertia and gyroscope sensors about the way the camera moves while shooting. This metadata can then be used to stabilise your footage in post production. The stabilisation that this can provide is normally very good and tends to look a lot more natural than using post production stabilisation that looks at the footage and tries to hold it steady. However, until recently the only way to make use of this metadata was via Sony’s Catalyst Browse software.
Now however an Open Source project known as GyroFlow has made it possible to use the Sony metadata in FCP-X and DaVinci Resolve via an OpenFX plugin and a FCP-X plug-in. In addition there is a standalone GyroFlow application that can stabilise the footage and then export a stabilised version of the clip.
GyroFlow is a collaborative Open Source project, so different developers are working on different aspects and plug-ins, so it is a bit more disjointed than a lot of commercial products. But, it is free and it will get better, so why not give it a try. The main website for the project is here: http://gyroflow.xyz/