Hamachi will allow you to establish secure direct connections to PC's that are not accessible otherwise due to the restrictions in network setup.
LanTopolog is an application that provides physical network topology discovery, visualization and monitoring.
ChrisPC DNS Switch
NetSetMan is a network settings manager which can easily switch between 6 different, visually structured profiles. Pre-prescribing network settings, you no longer have to write them again when you change your network connection (for example, when you connect your home computer at work, in cafes, or frequent switching between providers).
LanHelper can scan network at high speed and it can even detect writable or read-only shared folders with the powerful and special engine. Boot (wake up) or shut down or lock your PCs.
Avira Antivir Rescue System
Avira Antivir Rescue System - boot disk to help restore the operating system virus. Booting
Total Uninstall - analyze the installed program and create the installation log. This is used to do a complete uninstall even without the help of the provided standard uninstaller from Add Remove Programs.
Hitman Pro does not need to install any third party sofware. It is a stand alone program which looks for unknown and suspicious files, giving each of them a score using a patent pending technique.
HyperSnap is the fastest and easiest way to take screen captures from Windows screen, and text capture (TextSnap) from places where normal text copy is not possible.
Maxthon Browser is a multi-tabbed browser based on the IE core (IE5.x or above required). It can open multiple web pages within one browser window, and uses little system resources.