.jnx file: how to open it on Windows

1 Windows app registers the .jnx extension. Install one of them to open the file with a double-click.

• 
  GPXSee

  GPXSee is a Qt-based GPS log file viewer and analyzer that supports all common GPS log file formats.

  Open source 16.18 ★ 1.3K

Related guide: Change the default app for a file type in Windows