If you are working with or specialized inspection software, "GPSLayer" is a custom application ( GPSLayer_Arc9_POSM_MapReader.zip ) often used to add real-time GPS tracking to published maps. How to get it: It is hosted on the POSM Download Website.

is a popular open-source tool that uses a "GPS Layer" to manage real-time feeds and track data.

Depending on your goal, you are likely looking for one of the following: 1. POSM MapReader (GPSLayer Component)

Ideal for importing GPX files, managing waypoints, and viewing maps from Google or OSM. 3. ArcGIS SDK Development

For developers, GpsLayer is a class within the (for Android, WPF, or Windows Phone) used to display a device's current location on a map.