Firefox
Open source web browser, alternative to Internet Explorer.
www.mozilla-europe.org/en/firefox/
NEL - Highly Recommended

Thunderbird
Open source email client, alternative to Outlook and Windows Mail(Outlook Express).
www.mozillamessaging.com/en-GB/thunderbird/
NEL - Highly Recommended

Openoffice
Open source office suite, alternative to Microsoft Office.
www.openoffice.org
NEL - Highly Recommended

Gimp
Open source image manipulation program, alternative to Photoshop and Paintshop.
www.gimp.org
NEL - Highly Recommended

Ubuntu
Open source Linux operating system, alternative to Microsoft Windows(all versions) and Apple MAC OS X.
www.ubuntu.com
NEL - Highly Recommended