Daemon Tools v4.12:
http://www.disc-tools.com/download/daemon
DAEMON Tools is an advanced application for Microsoft Windows which provides one of the best optical media emulation in the industry.
DAEMON Tools
enabling you to use your CD/DVD images as if they were already burned to CD/DVD.

VLC Media Player:
http://www.videolan.org/vlc/download-windows.html
VLC media player is a highly portable multimedia player for various audio and video formats (MPEG-1, MPEG-2, MPEG-4, DivX, mp3, ogg, …) as well as DVDs, VCDs, and various streaming server to stream in unicast or multicast in IPv4 or IPv6 on a high-bandwidth network.

OpenOffice:
http://www.openoffice.org/
The best freeware office suite available.

Winrar:
http://www.win-rar.com/downloadnow.html
The standard in compression software.

Firefox:
http://www.mozilla-europe.org/en/firefox/
The new version of the popular browser.