GPSoftNav

GPSoftNav provides MATLAB toolboxes for simulating GPS, INS, and Kalman filter-based navigation and sensor integration systems. In practice that means building software for you when nothing off the shelf fits.

The natural audience is companies with a specific process to automate. Related areas on their profile: Aerospace, Navigation and Simulation. As a very small company team themselves (1 to 10 people), they tend to serve customers of a similar scale best. You will probably talk to the people who build it, which is great until you need 24/7 support.

GPSoftNav is based in Athens, Ohio. Their site is gpsoftnav.com.

Before you commit, look at portfolio relevance, who owns the code, and how they handle changes. Ask for a trial on your own data, not a canned demo.

The facts above come from public company records. The score will come from people like you. Used GPSoftNav? Rate it.