GPSLocator
GPSLocator is a simple Windows desktop app for interacting with your GPS device. It currently supports Garmin's InReach, and lets you keep track of a device's last known location, and its history of tracking points and messages.
Garmin, InReach and associated trademarks are copyright Garmin.
You must have a professional-level InReach account for the app to work. Standard personal accounts do not offer access to the web-based APIs InReachLocator requires.
Documentation on using the app is available here.
Developer documentation will be forthcoming.