Here are some great pieces of software which are open source. This means you are able to download them and use them completely free of charge.

	Spyware... SpyBot Search and Destroy - detects and removes spyware, a relatively new kind of threat not yet covered by common anti-virus applications. Spyware silently tracks your surfing behaviour to create a marketing profile for you that is transmitted without your knowledge to the compilers and sold to advertising companies!!
	Complete Office Packages... OpenOffice.org 3 is the leading open-source office software suite for word processing, spreadsheets, presentations, graphics, databases and more. It is available in many languages and works on all common computers.
	Anti-virus.. Basic Anti-virus protection for Windows systems, available for download for free. Limited features, no support and for non-commercial use only!
	Acrobat Reader .. Easily view, print, and collaborate on PDF files with free Adobe Reader 9 software.
	Microsoft file readers .. Open, view, and print Powerpoint, Word and Excel documents, even if you don't have these programs installed. Powerpoint - Word - Excel