Its homepage used to be http://www.etlinux.org/ . However, the company who sponsered that site has closed it down. If you do a web site for etlinux, you will find some new sites that have some info - perhaps someone will track down the new home of this package.
etdxc 2007.July.05 The following pages appear responsive.
escargo: The ftp directory has a link to a 3.0 beta that was last changed in November 2006.
dbohdan 2014-12-31: If, like me, you were primarily interested in Etlinux for its Tcl-based init system you can find an updated version of it in the source package for Ettcl at http://www.linux.it/~rubini/software/#ettcl .