Debookee is a LAN and Wi-Fi packet-capture tool and network analyzer that allows you to see what your devices are sending over the network.

Apple Remote Desktop is the best way to manage the Mac computers on your network. Distribute software, provide real-time online help to end-users, create detailed software and hardware reports, and automate routine management tasks — all from your own Mac.

If you can hear it, you can record it - Record any application's audio, including VoIP calls from Skype, web streams from Safari, and much more. Save audio from hardware devices like microphones and mixers as well. You can even record all the audio heard on your Mac at once! If you can hear it, Audio Hijack can record it.