PresenTense Time Server 

High performance Windows time server supporting NTP and SNTP protocols. Installation automatically configures default time servers so you have an operational time server in 30 seconds. GPS clock drivers are included.
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GPS.NET Global Positioning SDK 

Develop precise, efficient, and reliable GPS software in record time with this multithreaded component for desktop and mobile devices, including PocketPC, Tablet PC and now Smartphone!
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MarshallSoft GPS Component for C/C++ 

GPS component C/C++ library toolkit reads and decodes standard GPS NMEA 183 sentences from the RS232 serial port, and computes great circle distances and bearings. Runs as a background thread unattended. Works with C++,VC.NET,C#,MFC,C++ Builder.
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MarshallSoft GPS Component for Visual Basic 

GPS component VB library toolkit reads and decodes standard GPS NMEA 183 sentences from the RS232 serial port, as well as computes great circle distances and bearings. Runs as a background thread unattended. Works with Visual Basic and VB.NET.
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Frontbase GPS 

GPS Software for Garmin. Download waypoints, routes and tracks from Garmin GPS. Upload waypoints, routes and tracks to Garmin GPS. Excel and Text files supported! This software is very easy to use!
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OziPhotoTool 

OziPhotoTool takes the digital photos with EXIF metatdata, and tracks from OziExplorer to determine where the GPS was when the photo was taken. Check http://oziphototool.alistairdickie.com/download.html for smaller download options
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