- Axiom Navigation, Inc.
 - Anaheim - Offers GPS/FMS systems, software, and accessories. - GeoMicro
- Santa Ana - Supplier of GIS tools and services for location based applications enabling retrieval and manipulation of map data.
- Inertial Science, Inc.
- Newbury Park - Designs and builds navigational systems, inertial systems, and sensors.
- Navigation Laboratories
- Laguna Niguel - Manufacturers GPS constellation simulators in stand alone or externally driven configurations (ethernet/ GPIB/ SCRAMNet) for the military, avionics, automotive, cellular, and other industries.
- Safe Navigation
- Long Beach - Sells nautical charts, books, and instruments.
- Telogis
- Costa Mesa - Designer and manufacturer of real-time, web-based GPS vehicle tracking and fleet management systems.
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