HCC Incorporated
- Manufacturer of farming and harvesting equipment. Including reels, sieves, chaffers, and other combine related products.
- http://www.hccincorporated.com

Ayrstone Productivity, LLC.
- Provides an online forum and offers an educational DVD on GPS and auto guidance products.
- http://www.ayrstone.com

Rosenfeld Supply
- Supplies a magnetic assembly that holds a GPS Antenna Cable in place and protects the connector when the GPS Antenna is not being used.
- http://www.rosenfeldsupply.com

Martens Farms
- Provides precision farming software, equipment, and training on-site, by phone, or online. This site includes product info, tips and free downloads.
- http://www.123farmworks.com

Agri-Tech Solutions
- Provides DGPS products and service, including brands such as Trimble, Ag Leader, TDS and StarPal.
- http://www.atsgps.net/

CropMaps
- CropMaps sells remote sensing based yield, management zone, and canopy density maps. They can be used for directed soil and tissue sampling and to create variable rate application maps.
- http://www.cropmaps.com

Servi-Tech Midwest Ag Laboratories
- Precision laboratory analysis of soil, water, feed, manure for progressive farmers.
- http://www.servi-techinc.com/

Environmental Studies
- Information and distributor of GPS, EGNOS, and Precision Farming products.
- http://www.environmental-studies.de

John Deere - Ag Management Solutions Work made easy with precision farming by John Deere : John Deere
- John Deere provides various precision agriculture equipment and services. This site contains product information, tools, manuals, and troubleshooting tips.
- http://www.deere.com/en_US/ag/servicesupport/ams/index.html

Ag Leader Technology
- This site showcases dedicated precision agriculture products.
- http://www.agleader.com

Precision Planting
- Offers implements and training for precision farming, including Keeton Seed Firmer planter attachment, the Meter Max calibration system, and training videos.
- http://precisionplanting.com

Pacer-Corp
- Corporation provides contract research and precision agricultural services in the northwest region of the United States.
- http://pacer-corp.com

Nielsen Communications
- Provides electronic technology and precision agricultural products to farmers, and agri-business companies in the midwest.
- http://www.farmgps.com/