|Provides all the process details that Windows Task Manager does not.
|Actually one of the many “SysInternals” tools provided by Microsoft (as noted below).
|Around 70 Windows utilities intended mostly for tweaking and examining various parts of the operating system.
|Mostly written by Mark Russinovich - a professional hacker who Microsoft “brought inside” when they bought his company in 2006.
|Free Hex Editor is a simple tool that allows you to view and edit every bit inside any file.
|Even big files that might not fit in memory can be partially loaded and viewed/edited
|Runs a comprehensive test of a system’s memory and Northbridge chip. (bootable CD)
|Excellent for testing a new PC’s memory before trusting it with data. Also good for debugging a PC that’s starting to act flaky.
|Describes everything about your computer hardware that software can possibly discover - including details about memory, CPU, graphics, storage, and motherboard components.
|Written by the same people that make really good disk tools: Piriform.
|One of the most popular packet sniffing and protocol analysis tools available. Can also view wireless traffic if your WiFi adapter can be put in "monitor" mode.
|Since Ethernet switches have mostly replaced hubs, sniffing won’t be very interesting until you setup port mirroring on your switches. Dedicated remote "packet capture" hosts can also be monitored by a central console.
|This network tool discovers all devices connected to your local wired and wireless networks. Attempts are made to identify each device based on protocol responses and MAC addresses.
|Particularly useful when assigning static IP addresses and you don't already have a good device inventory.
|Ultimate Boot CD
|This bootable ISO image, also refered to as “UBCD”, has a pile of disk and other utilities available from a startup menu. This includes a good number of utilities described above - but only the non-windows ones.
|If you’re allowed to take one disk to a desert island covered with broken PC's, this is it. Incidentally, UBCD can be started from a USB thumb drive as well.
|While not an official HP product, this emulator is a very close HP-16c workalike. Although the actual calculator was discontinued in 1989, it is still popular with programmers.
|This is the calculator I should have had in college - and regret that it was discontined the year I graduated (when I finally realized how useful it was). Incidentally, a third-party, credit-card-sized reproduction is now available here.