Hi @WaterWizard,
Let me answer your questions below.
Yes, you can upload projects to the ReachView app. Currently, ReachView supports the project import in the following formats: CSV, GeoJSON or DXF. ReachView handles the WGS84 coordinate system only. To work with different coordinate systems, you can check out our ReachView 3 beta version.
I’m afraid that we haven’t tried working with the software you mentioned apart from the ArcGIS collector. Hopefully, our users would share their experience with you. If the software supports the standard NMEA position output, there should be no issues in integration.
Regarding the ArcGIS Collector, above you can find a video guide on how to integrate the Reach receiver with the ArcGIS Collector.