Debian users can add the following two lines in /etc/apt/sources.list
and use Debians own package management tools, apt-get, aptitude, or dselect.
Replace xxxxx with sarge, etch or lenny.
As of February 2009, woody is out (3.0), sarge is old stable (3.1),
etch is stable (4.0), lenny (5.0) is stable.

deb http://ftp.indexdata.dk/debian xxxxx main
deb-src http://ftp.indexdata.dk/debian xxxxx main

These packages are signed with a key you can install as follows:
 wget http://ftp.indexdata.dk/debian/indexdata.asc
 sudo apt-key add indexdata.asc