Adobe Acrobat Reader
  Adobe® Acrobat® Reader® is free software that lets you view and print Adobe Portable Document Format (PDF) files. With Acrobat Reader, you can also fill in and submit Adobe PDF forms online. And now, Acrobat Reader for mobile devices lets you view Adobe PDF files on the go.  (download older version)
  VNC stands for Virtual Network Computing. It is remote control software which allows you to view and interact with one computer (the "server") using a simple program (the "viewer") on another computer anywhere on the Internet. The two computers don't even have to be the same type, so for example you can use VNC to view an office Linux machine on your Windows PC at home. VNC is freely and publicly available and is in widespread active use by millions throughout industry, academia and privately.
Microsoft Internet Explorer
  Internet Explorer makes it easier to get the most from the World Wide Web, whether you are searching for new information or browsing your favorite Web sites. Built-in IntelliSense technology can save you time completing routine Web tasks, such as automatically completing Web addresses and forms for you, and automatically detecting your network and connection status.
Mozilla Firefox
  Mozilla Firefox is a fast, full-featured Web browser that makes browsing more efficient than ever before. Firefox includes pop-up blocking; a tab-browsing mode that lets you open several pages in a single window; integrated Google searching; simplified privacy controls that let you cover your tracks more effectively; a streamlined browser window that shows you more of the page than any other browser; and a number of additional features that work with you to help you get the most out of your time online.