WIDE IPv6-related implementations

Home-brew implementations from participating organizations
KAME, Hitachi, Toshiba, Matsushita, Fujitsu, Keio Univ, NEC, Sony CSL, Onoe
Platforms: UNIX variants and Win95

IPv4-v6 translator/proxy implmentations
All kinds of translators available: Header conversion, TCP relay, application gateway

"newbie": home-brew DNS server

KAME project: BSD-licensed free reference implementation