Google also had Project Tango, which I believe used hardware IP they acquired through their brief ownership of Motorola. They scrapped that approach since current mobile processors are powerful enough to accomplish the same thing in software.

Occipital's Structure Sensor has been available for years, and uses an active scan along the lines of what the Kinect does.

Among the available options, I'm most interested in calculating depth from parallax relative to motion using scale heuristics and dead reckoning, like Tango. Particularly for outdoor applications.