Recently GoPro announced that they are taking the small software company ReelSteady into their family. Although the current Hero Actioncam with Hypersmooth has quite a powerful image stabilisation, the manufacturer apparently expects additional synergies for the further development of GoPro apps through this cooperation.
ReelSteady Go is a simple tool for subsequent stabilization of GoPro action footage - older cameras up to Hero 5 are also supported (including the session). The data of the gyro sensor is used for the calculations. In addition, ReelSteady is available as a more professional After Effects plugin, which offers keyframe-accurate control over the applied stabilization, even of material from other cameras.
ReelSteady for Adobe After Effects
The ReelSteady products will be sold and apparently maintained as such in the future.