Office Suite
http://www.openoffice.org/ (recommended)
http://www.abisource.com/
http://pack.google.com/
http://www.adobe.com/products/acrobat/readstep2.html
http://www.foxitsoftware.com/pdf/rd_intro.php
Anti-Virus
http://www.free-av.com/
http://www.pctools.com/free-antivirus/
http://www.clamwin.com/
http://antivirus.comodo.com/
http://www.bitdefender.com/PRODUCT-1…e-Edition.html
http://www.activevirusshield.com/ant…eav/index.adp?
http://www.avast.com/eng/avast_4_home.html
http://free.grisoft.com/
Defrag
http://www.kessels.com/JkDefrag/
http://www.majorgeeks.com/Power_Defr…GUI_d4647.html
http://freewaregeeks.com/UltimateDefrag_Free.html
Partition Managers
http://www.partition-tool.com/
http://www.ptdd.com/manual2.htm
http://findandmount.com/
http://www.cutepm.com/
CD Ripping
http://cdexos.sourceforge.net/
http://www.download.com/Free-CD-Ripp…-10212165.html
http://www.exactaudiocopy.de/
Audio Books
http://www.audiobooksforfree.com/home
http://librivox.org/
http://www.audiobooktreasury.com/free-audio-books.htm
Media
Browsers
Operating Systems