CopyLatLngOnMaps 0.3 for Mac was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The program lies within Lifestyle Tools, more precisely Travel. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe. This free software for Mac OS X was originally produced by Norio Nomura.
From the developer:
CopyLatLngOnMaps is a share extension for WebPage. Once the app is installed, the "Copy LatLng to Clipboard" option appears on the Share Menu. The application detects the latitude or the longitude from the URL and offers to copy it to the clipboard. The program is designed to be used with Maps for OS X and Google Maps on Safari.
You may want to check out more Mac applications, such as TheTudors, Build-a-lot 3 or XPlaneCentre, which might be related to CopyLatLngOnMaps.