Geomagic Design X is described as 'Reverse engineer physical parts into digital parametric CAD models with the most comprehensive reverse-engineering software, combining history-based CAD with 3D scan data processing' and is a 3D Modeler in the photos & graphics category. There are four alternatives to Geomagic Design X for Windows, Linux and Mac. The best Geomagic Design X alternative is MeshLab, which is both free and Open Source. Other great apps like Geomagic Design X are Microsoft 3D Builder, CloudCompare and PointKit.
MeshLab is inteded for tottaly different usecase. Not comparable at all...