Nokia - Starting point for IPv6 solutions and strategic communication plattform. - http://europe.nokia.com/A4160032
Cisco Systems - Starting point for IPv6 solutions and strategic communication plattform. - http://www.cisco.com/en/US/products/ps6553/products_ios_technology_home.html
Microsoft - Contains links to a variety of introductory overviews on IPv6 technology, information on Microsoft implementations, press releases on support and development of IPv6. - http://www.microsoft.com/technet/network/ipv6/default.mspx
IBM - Starting point for IPv6 solutions and strategic communication plattform. Was the first Unix vendor to have an IPv6 product. - http://www-306.ibm.com/software/os/zseries/ipv6/