TwitterGPSing allows you to send GPS based tweets to Twitter. When you get a GPS lock enter the text and tap the button to send the Tweet with your current GPS. The program will send the tweet to Twitter.com with your current GPS. NOTE: To use Geolocation on Twitter in 'Settings/Account/Tweet Location' enable. This service is provided by Twitter
TwitterGPSer uses the GPS on your PocketPC to find your current latitude/longitude/speed and allows you to update Twitter.com. Tap the button to get the GPS lock and when the program gets the lock it will create a Tweet with a Google.com map link. This service is provided by Twitter
TwitsnapsMaps uses the GPS on your PocketPC to find your current latitude/longitude/speed and altitude and allows you to upload your position via map to Twitter.com. You can customize the maps zoom, and type via the 'Options' in the toolbar. The maps service is provided by Google.com. The map/Twitter storage is from TwitSnaps