Torta shows you where your disk space is going. It uses the graphical format used by filelight to represent disk usage. Unlike filelight, it can be run on a computer with no graphical environment: it generates a Flash file that can be consulted, locally or remotely, using any browser that has the Flash plugin installed.
Ultimate Boot CD is a collection of Freeware and Free Software tools for PC diagnostics and maintenance. Included are tools for BIOS editing, CPU and memory testing, boot management, data recovery, peripheral and system inventory, and hard drive partitioning, cloning, wiping, diagnostics, and low-level editing. All tools boot and run from the CD.
UnusedPkg is a diagnostic tool to search the oldest unused packages in your Linux system. UnusedPkg prints a sorted list with the size and number of days that a package has been idle. This helps you determine what packages can be manually removed to clean the system. It supports any apt-based distribution (tested on Debian and Ubuntu) and Slackware.
weedit is a file duplicate scanner with database support. It uses CRC32, MD5, and file size to scan for duplicates. Files that are deleted are automatically removed from the database when a duplicate is found. It will only rescan files if the creation time or last write time change. It will only delete duplicated files if the parameter for deleting is used. The default setting is to report only.
Whiskers is an educational PocketPC application that tries to exploit all the hardware available on most common PDAs providing a link between different features such as GPS-Bluetooth-Wireless. Generally, whiskers was built with radio reconnaissance in mind as help for geocachers or wardrivers, but also as a penetration and audit tool. There is support for in-depth device scanning, triggering actions based on filters when certain devices are in range, centralized GPS logging with search functions for private or public databases, and much more.
YASIS is a very detailed sysinfo script that displays individual stats or grouped info. It only requires lspci and common tools found in any distribution. Check the page for example outputs. It displays distribution/kernel, CPU count/cache/load, disk/swap/RAM used/free, network info/speed, CPU temp/fan speeds, X environment info (wm/de and display info), bandwidth speeds, and more.
Zoom is a low-overhead graphical and command line profiler for Linux. Profiles are system-wide, precise down to the instruction level, and capture complete backtraces of C/C++/ObjC/Fortran/Assembly code. This lets you see exactly where time was spent, what code was running (user or kernel), and how that code was called. Drill down into a specific symbol, and Zoom shows source and assembly annotated with general and processor-specific tuning advice. It saves profiles as a single, self-contained session file that can be emailed or attached to bug reports. This lets you share what you find with colleagues or archive it for later review. Zoom also supports remote network profiling and scripting, making it ideal for embedded or server systems and automated workflows.