- DG Intelligent Systems
 - Provides a computer-based intelligent sailing system. - Digital Wave
- Developers of Visual Passage Planner (VPP), the Pilot Chart based Passage Planning software for Windows.
 Linden Software
- Designs software tools for maps and mapping used in marine survey, science, and in navigation.- Maxsea Marine Software
- Navigation software and products for recreational boating and yachting, racing, commercial fishing, and shipping.
- Nautical Technologies
- Makers of Computerized American Practical Navigator (CAPN). The CAPN plots your position on electronic charts interfaced with GPS/DGPS, or LORAN.
- Navtronics
- Marine and land navigation software with GPS interface, GPS Vehicle tracking systems, and marine electronics.
- Nobeltec
- Sells nautical software.
- Pangolin Communications
- Marine software for offshore cruisers.
- PC Maritime
- Publishers and developers of maritime software.
- Stormy Weather SoftWare
- Develops marine and security applications, communications programming, web technology, videoconferencing, and graphic art.
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