This is a page for tracking how DebianInstaller is being used by third parties in custom images and other distributions.
Skolelinux (http://www.skolelinux.no) is a woody-based Debian derivative that was the first distribution to ship with the DebianInstaller. The installer images are not actually modified for Skolelinux, only a couple more udebs are added to the CD. Debian-Edu is the sarge-based update to skolelinux which also used the DebianInstaller. The source to the added udebs is in their svn repository at svn://svn.debian.org/debian-edu/trunk/src/debian-edu-install
Ubuntu (http://ubuntulinux.org/) uses a customised version of the DebianInstaller for their installation CD. Their live CD uses DebianInstaller as part of its boot process (details?). Their changes to the installer are available from arch, see http://lists.debian.org/debian-boot/2005/07/msg00757.html for details.
Dick Visser has produced sarge ISO images that support the Areca SATA controller. http://www.tienhuis.nl/areca/
If you have produced a customised image based on the DebianInstaller, please add it here. ?DebianInstallerModify, ?DebianInstallerBuild, ["DebianCustomCD"], and ?DebianInstallerPreseed are useful resources.