This is intended to be a large list of reminders of various tools, in part because there are so many it's easy to forget the ones that fill a particular niche that you don't need to often.

• nmap - I use this one daily, it's the extras that I forget.
  • nping
  • ncat
  • ndiff
• bping - ping, but it beeps
• WifiInfoView
  • Nirsoft is great. This shows you wifi info and lets you connect to a specific AP.