LogMeIn Hamachi is a VPN service that easily sets up in 10 minutes, and enables secure remote access to your business network, anywhere there’s an Internet connection.
It works with your existing firewall, and requires no additional configuration. Hamachi is the first networking application to deliver an unprecedented level of direct peer-to-peer connectivity. It is simple, [...]

Wireshark is the world’s foremost network protocol analyzer, and is the de facto standard across many industries and educational institutions.

Deep inspection of hundreds of protocols, with more being added all the time
Live capture and offline analysis
Standard three-pane packet browser
Multi-platform: Runs on Windows, Linux, OS X, Solaris, FreeBSD, NetBSD, and many others
Captured network data can be [...]

Wireshark is the world’s foremost network protocol analyzer, and is the de facto standard across many industries and educational institutions.

Deep inspection of hundreds of protocols, with more being added all the time
Live capture and offline analysis
Standard three-pane packet browser
Multi-platform: Runs on Windows, Linux, OS X, Solaris, FreeBSD, NetBSD, and many others
Captured network data can be [...]

The CrossLoop application allows a person at one computer to view and/or control a remote computer. The person accessing the remote computer will be able to see the desktop, use the mouse and use the keyboard. The CrossLoop application works great for helping or being helped by friends and family or for being helped by [...]

UltraVNC is a powerful, easy to use and free software that can display the screen of another computer (via internet or network) on your own screen. The program allows you to use your mouse and keyboard to control the other PC remotely. It means that you can work on a remote computer, as if you [...]