Free Images
Note: Unless the source is listed under one of the "free to download" headings, then they are only free for personal use or simply free to look at. Free image sites particularly don't like it when you use them to make your own collection for commercial use (ie. a collection to sell). However, the ones listed for commercial use allow that the images be used in products and promotions (ie. a website banner, or as an illustration for a book that will be sold, just not for the sole purpose of selling a collection of images).
Free to Look At
photographiclibraries.com/index.php
abstractinfluence.com
Google Images
Yahoo Images
MSN Images
Free to Download for Personal Use, and sometimes educational (non-commercial)
stockvault.net
flickr
everystockphoto.com
freefoto.com/index.jsp
woophy.com
freelargephotos.com
amazingtextures.com/textures
zurb.net/zurbphotos
insectimages.org
artfavor.com
oneodddude.net
ancestryimages.com
nypl.org/permissions
abstractinfluence.com/forums
freepixels.com
pix.halal.dk
freeimages.com/photos
Free to Download for Commercial Use, no derivative works
flickr (use the creative commons search)
everystockphoto.com
visipix.dynalias.com
cepolina.com
texturewarehouse.com/gallery
Free to Download and adapt for personal or commercial use
flickr (use the creative commons search)
everystockphoto.com
morguefile.com/archive
freedigitalphotos.net
pdphoto.org
imageafter.com
unprofound.com (required to inform them how images are used)
fontplay.com/freephotos
studio25.ro
imagetemple.com
mayang.com/textures
texturewarehouse.com/gallery
freestockphotos.com
designpacks.com
aarinfreephoto.com
imagebase.davidniblack.com
tofz.org/index.php
lightmatterphotography.com
insectimages.org
freeimages.co.uk
creatingonline.com/stock_photos
gimp-savvy.com/PHOTO-ARCHIVE/index.html
creativity103.com (requires a link to the source)
freemediagoo.com
unprofound.com
freestockphotos.com
photorack.net
freefoto.com (requires a back link)
designpacks.com
bigfoto.com
photogen.com
gallery.hd.org/index.jsp
free-stockphotos.com
imageblowout.com
hooverstock.com
Free Royalty-Free stock photos
sxc.hu
everystockphoto.com
adigitaldreamer.com/gallery/index.php
kavewall.com/stock
adigitaldreamer.com/gallery/index.php
amygdela.com/stock
pixelperfectdigital.com/free_stock_photos
freerangestock.com
amgmedia.com/freephotos
free-photographs.net
freephotos.com - for online use
diwiesign.com/index.php?page=stockphotos
barrysfreephotos.com
Multiple Category (Photographs, CGIs, clipart, etc., terms of use vary)
picsearch.com
caedes.net
Photographs
flickr
everystockphoto.com
freephotosbank.com
vintagepixels.com
openphoto.net
CGIs
surrealplaces.com
vecteezy.com
Clipart
openclipart.org
free-graphics.com
pppst.com/clipart.html (free for non-commercial use)
Icons
commons.wikimedia.org/wiki/Crystal_Clear
sixrevisions.com/resources/40-beautiful-free-icon-sets
icondock.com/free/mini-pixel-icons
Wallpaper
crestock.com/blog/photography/another-17-fantastic-free-wallpaper-images-96.aspx
crestock.com/blog/design/21-magnificent-high-resolution-wallpapers-131.aspx
crestock.com/blog/photography/13-fantastic-free-wallpaper-images-80.aspx
visualparadox.com
kate.net
zenithair.com/misc/desktop.html
digitalblasphemy.com/freegallery.shtml
Mobile Phone Wallpaper
See Free Mobile Phone Downloads
Web, MySpace and Blog graphics/backgrounds
See
Webmaster Freebies
Photoshop Brushes
noupe.com/photoshop/1000-free-high-resolution-photoshop-brush-sets.html
psbrushes.net
texturewarehouse.com/gallery/index.php
Screen Savers
kate.net
Fun Picture Sites
yearbookyourself.com - make a fake yearbook picture of yourself. Ad your face to funny pics.
faceinhole.com/us - ad your face to one of their many funny pics.
taaz.com - ad your face, change your hairstyle and make-up. Great for ladies (and maybe men) who are thinking about a new haircut.
homokaasu.org/rasterbator - "Create huge, rasterized images from any picture. Upload an image, print the resulting multi-page pdf file and assemble the pages into extremely cool looking poster up to 20 meters in size."
epassportphoto.com - "The Internet passport photo booth, empowering people around the world to make free and valid passport photos."
picture2life.com - "Here you can Edit, Collage, Animate and Share your pictures online."
photorogue.com - request a photo that you need and a volunteer will try and get it for you.
simpsonizeme.com - turn a photo of yourself into a Simpsons character
Free Photo Hosting
See Webmaster Freebies
Free Photo Editing
See Free Services Online
See Drawing Software on the Free Software page
Cool Paid Services
(I know this is a free site, but these picture services are worth mentioning)
facegen.com (does have a free demonstration version)
animationfactory.com/en