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.
J. River Media Center
J. River Media Center (formerly Media Jukebox) provides an easy, efficient way to collect, organize, and play music and other media files on your PC.
Camtasia Studio records high-quality videos of your Windows computer screen, enabling you to share your PC knowledge with everyone in your office and around the world.
WebcamMax - program for the imposition of any effects to webcam video. During a video chat with friends can distort the image, animation, add or change background.
Mozilla Firefox - fast and flexible browser. Safety, speed, flexibility and extensibility - key features of Mozilla Firefox.
Light Alloy is a small but powerful alternative to Windows Media Player. Play AVI, DIVX, DVD, MP3, ASF, WAV and other multimedia formats with ease.