The software lies within System Utilities, more precisely File Managers. The actual developer of the free software is FitTrackView. The most popular version of the program 0.8. The default filename for the program's installer is FitTrackView.exe.
From the developer:
FitTrackView lets you view, share and convert FIT tracks directly on your device. Usually, they reside in the [your_device]:\Activity folder. And you can also operate with the FIT track files saved on your Windows computer. Displays tracks on the Google Map via your internet browser. Colors tracks depending on the current speed. Green - the lowest speed ... Red - the fastest speed.
You may want to check out more software, such as AveDesk, Control3 or DupFile, which might be similar to FitTrackView.