Dconf is a tool to collect a system's hardware and software configuration. It allows you to take your system configuration with you and compare systems (like nodes in a cluster) to troubleshoot hardware or software problems. It can also be configured to send out configuration changes at given intervals to a group of people, or store a new snapshot when system changes happen.
Finnix is a small, self-contained, bootable Linux CD distribution ("LiveCD") for system administrators, based on Debian testing. You can use it to mount and manipulate hard drives and partitions, monitor networks, rebuild boot records, install other operating systems, and much more.