External Tracking Software

Hello. Has anybody here experience with an external standalone tracking software like syntheye or pftrack? I would be interested in how they compare to Blender.

Like, is the feature tracking algorithm more stable? Do they have a better solve algorithm? Do they have important / neat features Blender doesn’t have? What is it like to track in them vs. Blender?

Nobody in here doing tracking in external software?

There are many such programs.
There is no tracking from multiple cameras in the blender. This is very necessary in the animation moukap. There are of course some trial solutions. But they are not so good