Free Software

Security
MSE - http://www.microsoft.com/en-ca/security_essentials/default.aspx
Microsoft Security Essentials – Free, easy to use and works well.

Avira  - http://www.avira.com/en/avira-free-antivirus
Free antivirus software, only downside is popup when loading.

Tune Up
Defraggler - http://www.piriform.com/defraggler
Free disk defrag software.

CCleaner - http://www.piriform.com/CCLEANER
File and history cleanup. Free and easy to use.

Office
LibreOffice - http://www.libreoffice.org/download/
Free alternative to Microsoft office, not as pretty but works just as well.

CutePDF - http://www.cutepdf.com/Products/CutePDF/writer.asp
Free print to PDF software. If you can print it, you can make it a PDF.

Pictures
Paint.net - http://www.getpaint.net/download.html
Tons of tools to edit images. Fits somewhere between Photoshop and MS Paint.

Picasa  - http://picasa.google.com/
Photo management and editor all in one. Very easy to learn and use.

Internet
Firefox - http://www.mozilla.com/en-US/firefox/new/
Alternate browser with way to many to list add-on’s and plugins.

uTorrent - http://www.utorrent.com/
Lightweight program to download torrent files with.

Skype – http://www.skype.com/
Voice, video and instant messaging software rolled into one. The king of video and conference calls.

Multimedia
ImgBurn - http://www.imgburn.com/
Free software for burning and creating disks and iso files.

VLC Player - http://www.videolan.org/vlc/
Video and audio player that plays just about anything. Try this if you are having troubles viewing a video you have downloaded.

Format Factory - http://www.formatoz.com/
Converts just about any video/audio file to almost any type you could want. Phone, Tablet, DVD, Computer and more…

Audacity - http://audacity.sourceforge.net/
Edit most audio files. Cut, paste, add tracks and more…

System Tools
CloneDrive - http://www.slysoft.com/en/virtual-clonedrive.html
Allows you to mount ISO and other files without having to burn them to CD/DVD.

TeraCopy - http://www.codesector.com/teracopy.php
Great file copy assistant. Pause, resume and skip errors without having to start all over.

Memtest+ – http://www.memtest.org/
Burn to cd, boot and test your ram.