Standard C satellite transceiver with GMDSS and optional GPS receiver. Works with a DOS-based computer.
Unmoderated forum on marine electrical and electronic equipment. Good advice and resources here, but you have to dig and you have to be selective.
An instrument that which contains Iridium Interface software and a GPS and can regularly send automatic position reports to the AdvancedTrack server where they can be accessed by anyone you authorize or transferred to your website.
PC software interface to optimize the download of weather products via wireless connections from an OCENS server which collects weather information from the internet.
Turnkey provider of satellite communication systems from Globalstar, Inmarsat, Iridium, Thuraya and others. Their website has thorough information about the various alternatives.