In the world there are different projects making software, some off these software is free to use.This site will only link to sites which provide free software.
From the EfficienSea Project:
- DaMSA AisLib - Java library for handling AIS messages: https://github.com/dma-ais/AisLib
- EfficienSea AIS VHF Datalink Manager: https://github.com/DaMSA/EAVDAM
- Extended INS https://github.com/DaMSA/ee-INS
From Arundale:
- A free AIS Decoder and NMEA router: http://nmearouter.com/docs/ais/ais_decoder_v3_downloads.html
From OpenCPN:
- A free multi platform Chartplotter and GPS Navigation software: https://opencpn.org/OpenCPN/info/downloads.html
From sourceforge:
- A free mindmap program: http://freemind.sourceforge.net/wiki/index.php/Main_Page
- A free UML program: http://alexdp.free.fr/violetumleditor/page.php
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