cdck is a simple program for verifying CD/DVD quality. Even if all files on the disc are readable, some sectors having bad timing and could become unreadable in the future. The tool reads a disc sector by sector, recording all reading timings, and then tells you its verdict. It can optionally write a timing table into a text file usable by gnuplot, from which graphs can be drawn.
firmware-tools is an architecture that utilizes native Linux packaging formats (.rpm and .deb) and native Linux change management frameworks (yum, apt, etc) for delivering and installing system firmware. This architecture is OS distribution, hardware vendor, device, and change management system agnostic.
Sstat is a kernel module for Linux 2.6 aimed at providing basic SCSI I/O statistics. While better tools exist for monitoring disk activity, SCSI (or Fibre Channel) tapes have been neglected so far. This module compiles out-of-tree and uses Kprobes to access the information needed so it can be used with "enterprise" kernels as well (where recompilation or rebooting are not acceptable).