GNS3

GNS3 is a graphical network simulator that allows simulation of complex networks.  This project is an open source, free program that may be used on multiple operating systems, including Windows, Linux, and MacOS X.  Users have to provide their own IOS/IPS/PIX/ASA/JunOS to use with GNS3.

http://www.gns3.net/

SCR.IM

This is a similar service to URL-shortening sites but for email.  The purpose is to have an email link that requires a captcha check before the true email address is displayed.

http://scr.im/

iPhone Explorer

iPhone Explorer is an iPhone browser for Mac & PC that lets you browse the files and folders on your iPhone as if it were a normal USB flash drive or pen drive. You can use the easy drag-and-drop methods to add or remove files and folders from the iPhone.

http://www.macroplant.com/iphoneexplorer/

Enabling Tech Support Mode within VMware ESXi 4.1

Tech Support Mode within a VMware ESXi 4.1 host is a command-line interface for troubleshooting.  The feature can be enabled via the vSphere client or via the console.

To enable via the console, log in as normal.  Access the Troubleshooting Options selection from the main menu.

The Tech Support Mode should be disabled by default.  A menu option is also available to place a limit on the amount of time the feature will remain active.

Save the changes.  Use the key combination of Alt-F1 to enter the Tech Support Mode.

To return to the main console window, use the key combination of Alt-F2.  Additional details on this topic can be found at http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1017910.