Geotagger is described as '2.0 is a droplet for inserting GPS coordinates into your photos' and is an app in the Photos & Graphics category. There are three alternatives to Geotagger for Mac, Windows and Linux. The best alternative is GPicSync, which is both free and Open Source. Other great apps like Geotagger are Photogpseditor (Free) and PhotoPlace (Free, Open Source).
GPicSync automatically inserts location in your photos metadata so they can also be used with any 'geocode aware' application like Picasa/Google Earth, Flickr, loc.alize.us, etc. Features: - Automatically geocode your photos (in the EXIF header).
PhotoGPSEditor home page. PhotoGPSEditor is an editor for automatically matching GPS tracking data (latiyudes and longitudes) with the location at which a photo was taken. The information is then added to the meta-data asscoaiated with the file.