The SixXS Wiki, Routers page lists routers that support IPv6 out of the box.
The Six Access site in general is a good reference for IPv6.
About SixXS: not a company, but rather a privately conducted development of software.
As such, we do not have any owners except for the two Copyright holders, Pim and Jeroen, mentioned below, who set up SixXS with a lot of time and effort, building the service from the ground up as a community service.
Our target is to provide decent IPv6 connectivity.
This thus involves the Tunnel Broker portion, but also monitoring the IPv6 routing tables using, amongst others, GRH.
For whom? For everybody.
The average joe and jane can use AICCU so that they can use IPv6 very quick and easy.
For the technically savvy, they can also use AICCU or they can set the tunnel up manually, whatever one wishes.
SixXS additionally provides services to the networking and internet operator community with tools like GRH which can be used for monitoring and debugging the IPv6 routing tables.
Some Microsoft notes on IPv6 Support in Home Routers (March, 2005).
Contrary to popular belief, Internet Protocol version 6 (IPv6)-capable devices, computers, and routers can provide users with virtually all the benefits of IPv6 without having to wait for Internet service provider (ISP) support for native IPv6 connectivity. This is made possible through IPv6 transition technologies that support IPv6 communications over an Internet Protocol version 4 (IPv4) network infrastructure.