Nota: Estos programas son Freeware o Software Libre (Quiere decir que son legales)
PD: Los marcados en verde son los mejores !

Gráficos 3D:
3Delight Free - http://www.3delight.com/index.htm
Anim8or - http://www.anim8or.com/
Aqsis - http://www.aqsis.com/
Blender - http://www.blender3d.org/
Houdini (Free Edition) - http://www.sidefx.com/apprentice/index.html
Now3D - http://digilander.libero.it/giulios/Eng/homepage.htm
OpenFX - http://www.openfx.org
POV-Ray - http://www.povray.org/
SOFTIMAGE|XSI EXP - http://www.softimage.com/products/exp/v3/
Terragen - http://www.planetside.co.uk/terragen/
Toxic - http://www.toxicengine.org/
Wings 3D - http://www.wings3d.com/

Anti-Virus:
a-squared - http://www.emsisoft.com/en/software/free/
AntiVir - http://www.free-av.com/
Avast - http://www.avast.com/i_idt_1018.html
AVG - http://free.grisoft.com/
BitDefender - http://www.bitdefender.com
ClamWin - http://www.clamwin.com/

Anti Spyware:
Ad-aware - http://www.lavasoft.de/software/adaware/
Bazooka - http://www.kephyr.com/spywarescanner/index.html
Hijackthis - http://www.spywareinfo.com/~merijn/downloads.html
SpyBot Search & Destroy - http://spybot.safer-networking.de/
SpywareBlaster - http://www.javacoolsoftware.com/spywareblaster.html
SpywareGuard - http://www.wilderssecurity.net/spywareguard.html
WinPatrol - http://www.winpatrol.com/

Audio Creation
Gungirl Sequencer - http://ggseq.sourceforge.net/pmwiki.php/Main/HomePage
HammerHead - http://www.threechords.com/hammerhead/introduction.shtml
Jesusonic - http://www.jesusonic.com/soft.php
KRISTAL Audio Engine - http://www.kreatives.org/kristal/index.php
orDrumbox - http://ordrumbox.sourceforge.net/
Tu2 - http://www.brambos.com/news.html

Audio Players:
1by1 - http://www.rz.uni-frankfurt.de/~pesch
Billy - http://www.sheepfriends.com/?page=billy
CoolPlayer - http://coolplayer.sourceforge.net/
DeejaySystem MK1 - http://www.deejaysystem.com/prod_mk1.asp
DeliPlayer. http://www.deliplayer.com/
Foobar 2000 - http://www.foobar2000.org/
iTunes - http://www.apple.com/itunes/
Jet Audio Basic - http://www.jetaudio.com/
Mixere - http://mixere.sourceforge.net/
Mixxx - http://mixxx.sourceforge.net/
monoRAVEik - http://www.mono211.com/monoraveik/mr1200.html
MoreAmp - http://sourceforge.net/projects/moreamp/
Musik - http://musik.berlios.de/
musikCube - http://www.musikcube.com/
QCD Player - http://www.quinnware.com/
Sonique - http://sonique.lycos.com/
Winamp - http://www.winamp.com/
XMPlay - http://www.un4seen.com/xmplay.html
Zinf - http://www.zinf.org/

Herramientas de Audio:
Audacity - http://audacity.sourceforge.net/
AudioShell - http://www.softpointer.com/AudioShell.htm
BeSweet - http://dspguru.doom9.net/
CDex - http://cdexos.sourceforge.net/
dBpowerAMP Music Converter - http://www.dbpoweramp.com/dmc.htm
EAC - http://www.exactaudiocopy.de/
Encounter 2003 - http://www.waschbusch.com/
GermaniXEncoder - http://www.germanixsoft.de/
K-MP3 - http://www.katarncorp.com/
KraMixer - http://www.kramware.com/
MP3 Book Helper - http://mp3bookhelper.sourceforge.net/
MP3 Tag - http://www.mp3tag.de/
Mp3 Tag Tools - http://massid3lib.sourceforge.net/
mp3DirectCut - http://www.rz.uni-frankfurt.de/~pesch/
MP3Gain - http://www.geocities.com/mp3gain/
mp3Trim - http://www.logiccell.com/~mp3trim/
MusicBrainz - http://musicbrainz.org/
Rarewares - http://rarewares.hydrogenaudio.org/
SoundEngine Free - http://www.cycleof5th.com/en/index.htm
TagScanner - http://xdev.narod.ru/tagscan_e.htm
The GodFather - http://users.otenet.gr/~jtcliper/tgf/
TigoTago - http://www.tigotago.com/

CD/DVD Burning:
Burn4Free - http://www.burn4free.com/
Burnatonce - http://www.burnatonce.com/
Burrrn - http://www.burrrn.net/
CDBurnerXP - http://www.cdburnerxp.se/
CDRDAO - http://cdrdao.sourceforge.net/
CDR Tools Frontend - http://demosten.com/cdrfe/
Deepburner - http://www.deepburner.com/
DVD Decrypter: http://www.dvddecrypter.com/
Easy Burning, DropCD & Audio CD - http://www.paehl.de/cdr
ImgBurn - http://www.imgburn.com/

Compresion / Descompresion:
7-zip - http://www.7-zip.org/
bzip2 - http://sources.redhat.com/bzip2/index.html
ExtractNow - http://www.extractnow.com/
FilZip - http://www.filzip.com/
Info-Zip - http://www.info-zip.org/
IZArc - http://www.florida.plus.com/izarc/
QuickZip - http://www.quickzip.org/
TUGZip - http://www.tugzip.com/
UPX - http://upx.sourceforge.net/
Zip&Go - http://www.handybits.com/zipngo.htm
Zipgenius - http://www.zipgenius.it/

Defrag Software:
DIRMS & Buzzsaw - http://www.dirms.com/
OpenVMS - http://www.execsoft.com/freeware/freeware.asp

Desktop Enhancements:
AveDesk - http://www.aqua-soft.org/board/showthread.php?t=17372
CursorXP - http://www.stardock.com/products/cursorxp/download.html
Desktop Sidebar - http://www.desktopsidebar.com/
Filehand - http://www.filehand.com/
Glass2k - http://www.chime.tv/products/glass2k.shtml
Kapsules - http://kapsules.shellscape.org/
Konfabulator - http://www.konfabulator.com/info
Lost Goggles - http://www.lostgoggles.com/
MobyDock - http://www.mobydock.com/
Panorama - http://www.ivory.org/panorama.html
RunFast - http://www.idiogensoftware.com/runfast/index.htm
Samurize - http://www.samurize.com/
SlickRun - http://www.bayden.com/SlickRun/
Snippy - http://www.bhelpuri.net/Snippy/
TaskSwitchXP Pro - http://www.ntwind.com/taskswitchxp/
tclock2 - http://home.inreach.com/2tone/tclock2/tclock2.htm
Trip - http://trip.glenmurphy.com/
Weather Watcher - http://www.singerscreations.com/
WinRoll - http://www.palma.com.au/winroll/

Download managers:
Free Download Manager - http://www.freedownloadmanager.org/
Fresh Download - http://www.freshdevices.com/freshdown.html
LeechGet - http://www.leechget.net/en/
Retriever - http://www.halogenware.com/software/retriever.html
Star Downloader - http://www.stardownloader.com/downloads.php
Sun Download Manager - http://www.sun.com/download/sdm/index.xml
wackget - http://millweed.com/projects/wackget/
wget - http://xoomer.virgilio.it/hherold/
WellGet - http://www.wellget.com/

Encryption and data security:
Axcrypt - http://axcrypt.sourceforge.net/
Blowfish Advanced CS- http://web.bsn.ch/lasse/bfacs.htm
Eraser - http://www.heidi.ie/eraser/default.php
File Shredder - http://www.sys-shield.com/fileshredder.htm
KeePass - http://keepass.sourceforge.net/
GnuPG - http://www.gnupg.org/
PGP Freeware - http://www.pgp.com/products/freeware.html
PicoCrypt - http://picofactory.com/picocrypt.html
TrueCrypt - http://www.truecrypt.org/
WindowsCleaner - http://www.winnowsoft.com/internet-eraser.htm

File Managers:
2xExplorer - http://netez.com/2xExplorer/
A43 - http://www.shawneelink.net/~bgmiller/
ExplorerXP - http://www.explorerxp.com
freeCommander - http://www.freecommander.com/index_en.htm
Gyula’s Navigator - http://www.wanari.com/
JExplorer - http://home.megapass.co.kr/~woosjung/
MeeSoft Commander - http://meesoft.logicnet.dk/

File repair and recovery:
PC Inspector File Recovery - http://www.pcinspector.de/file_recovery/UK/welcome.htm

Firewalls:
Jetico Personal Firewall - http://www.jetico.com/index.htm#/jpfirewall.htm
Kerio (Kerio Personal Firewall is FREE for home and personal use) - http://www.kerio.com/kpf_home.html
NetVida Safetynet - http://www.netveda.com/consumer/safetynet.htm
Outpost Firewall (version 1 is free) - http://www.agnitum.com/download/outpost1.html
SoftPerfect Personal Firewall - http://www.softperfect.com/products/firewall/
Sygate - http://smb.sygate.com/products/spf_standard.htm
Wyvern Firewall 2004 - http://www.wyvernworks.com/firewall.html
Zonealarm Basic firewall - http://www.zonealarm.com/store/content/catalog/products/sku_list_za.jsp

FTP Clients:
CoreFTP - http://www.coreftp.com/
Filezilla - http://sourceforge.net/projects/filezilla
miFiles - http://www.simdata.com.au/mifiles.html
SmartFTP - http://www.smartftp.com/

FTP Servers:
Cerberus - http://www.cerberusftp.com/
FileZilla - http://filezilla.sourceforge.net/
Golden FTP Server - http://www.goldenftpserver.com
Quick ‘n Easy FTP Server - http://www.pablovandermeer.nl/ftp_server.html
SlimFTPd - http://www.whitsoftdev.com/slimftpd
TYPSoft FTP Server - http://en.typsoft.com/
WarFTPD - http://www.jgaa.com/

HTML Editors:
1st page 2000 - http://www.evrsoft.com/download.shtml
AceHTML - http://freeware.acehtml.com/download.html
Aracnophilia - http://www.arachnoid.com/arachnophilia/
FoxEditor - http://foxeditor.sourceforge.net/
HTML-Kit - http://www.chami.com/html-kit/
NVU - http://www.nvu.com/index.html
Selida - http://www.amaryllis.8m.com/
Trellian webPAGE - http://webpage.vendercom.com/
TSW WebCoder - http://www.tsware.net/

Image viewers:
Ahaview - http://www.aha-soft.com/ahaview/ahaviewfree.exe
FastStone Image Viewer - http://www.faststone.org/FSViewerDetail.htm
Irfanview - http://www.irfanview.com/
Picasa - http://www.picasa.com/content/download.php
Shell Extension - http://www.firmtools.com/products/shellextension/
SlowView - http://www.slowview.at/
XNView - http://www.xnview.com/

Instant Messengers:
AMSN - http://amsn.sourceforge.net/index.php
Gaim - http://gaim.sourceforge.net/
Google Talk - http://www.google.com/talk/
IM2: http://www.im2.com
Mercury Messenger - http://www.mercury.to/
Miranda IM - http://www.miranda-im.org/
Pandion - http://www.pandion.be/
PSI - http://psi.affinix.com/
qip - http://www.qip.ru/
Skype - http://www.skype.com/
SIM - http://sim-icq.sourceforge.net/
TerraIM - http://terraim.sourceforge.net/
Trillian Basic - http://trillian.cc/downloads

Internet Explorer Front-Ends:
AM Browser - http://www.ambrowser.com/
AOL Browser - http://beta.aol.com/projects/aolbrowser/
Avantbrowser - http://www.avantbrowser.com/
Maxthon - http://www.maxthon.com/
SlimBrowser - http://www.flashpeak.com/sbrowser/sbrowser.htm
Mozilla Firefox - http://www.mozilla-europe.org/es/products/firefox/
Opera - http://www.opera.com/

IRC Clients:
BersIRC - http://www.bersirc.com/
BitchX - http://bitchx.org/download.php
HydraIRC - http://www.hydrairc.com/
NodeIRC - http://node.sourceforge.net/
TinyIRC - http://www.tinyirc.net/
XChat - http://www.silverex.org/news/

Mail programs:
Foxmail - http://fox.foxmail.com.cn/english/
i.Scribe - http://www.memecode.com/
Mahogany Mail - http://mahogany.sourceforge.net/
Pegasus Mail - http://www.pmail.com/
PopTray - http://www.poptray.org/
Thunderbird - http://www.mozilla.org/projects/thunderbird/

Anti-spam programs:
K9 - http://www.keir.net/k9.html
MailWasher- http://www.mailwasher.net/
POPFile - http://popfile.sourceforge.net/
SpamBayes - http://spambayes.sourceforge.net/
SpamPal - http://www.spampal.org/

Network Tools:
CMDTime NTP Utility - http://www.softshape.com/download/
Ethereal Protocol Analyzer - http://www.ethereal.com/
Gencontrol - http://www.gensortium.com/products/gencontrol.html
hamachi - http://www.hamachi.cc/
NetMeter - http://readerror.gmxhome.de/
NetProfiles - http://netprofiles.danielmilner.com/
NMap - http://www.insecure.org/nmap/
Ntop - http://www.ntop.org
PingPlotter - http://www.pingplotter.com
PuTTY - http://www.chiark.greenend.org.uk/~sgtatham/putty
RAS Graph & Stats - http://forum.flashfxp.com/showthread.php?s=&threadid=2400
RealVNC - http://www.realvnc.com/
TightVNC - http://www.tightvnc.org/
Ultr@VNC - http://ultravnc.sourceforge.net/
WinSCP - http://www.winscp.com/

Office Suite:
602PC Suite free edition - http://www.software602.com/products/pcs/download.html
AbiWord - http://www.abiword.com/
OpenOffice.org - http://www.openoffice.org/
qjot - http://www.xtort.net/xtort/qjot.php
TreeDBNotes - http://www.softviewer.com/treedbnotes/free_index.htm

Partition Managers:
Partition Resizer - http://zeleps.com/
Ranish Partition Manager - http://www.ranish.com/part/
SwissKnife - http://www.compuapps.com/Download/swissknife/swissknife.htm
TestDisk - http://www.cgsecurity.org/index.html?testdisk.html

PDF Utilities:
CutePDF - http://www.cutepdf.com/Products/CutePDF/writer.asp
Foxit PDF Reader - http://www.foxitsoftware.com/pdf/rd_intro.php
Free PDF - http://www.webxd.com/zipguy/frpdfdl.htm
Ghostscript/GSView - http://www.ghostscript.com/
PDF 995 - http://www.pdf995.com/
PDFCreator - http://sourceforge.net/projects/pdfcreator/
PrimoPDF - http://www.primopdf.com/

Mantenimiento:
CCleaner - http://www.ccleaner.com/