The Slamd64Linux distribution is the first unofficial port of Slackware to the x86-64 architecture. The port started shortly before January 2005, with the first "alpha" release being made publicly available in January 2005. It is discontinued because Slackware now has an official 64-bit version available.
Support for compiling 32-bit binaries was removed for the 11.0 release, but was reintroduced in the 12.0 release.
Slamd64 was created and is maintained by Fred Emmott.