Photocase

"Stock photography doesn't have to be predictable. If you been looking for fresh and exciting imagery, then stop looking 'cause you just found it. We understand that it's not just about pretty photos, you need to be sure the photos are cleared for any kind of use. We do that for you so all you need to think about is which Photocase photo is best for your website, book cover, ad campaign or whatever else you're up to."

http://www.photocase.com/

MorgueFile Free Photos

"Free images for your inspiration, reference and use in your creative work, be it commercial or not!

Wondering about the morgueFile license? Click here 

It's also easy to add your own photos to the morgueFile. So, give back because this archive is for creatives by creatives.

Why is it called morgue file? Click here and find out."

http://www.morguefile.com/

Photogen Free Hi-Res Stock Photos

"Still paying for your stock photos and images? Forget royalty-free - Photogen images are totally-FREE! Registered users can download and use Photogen stock photos FREE, both for commercial and personal projects.
The Photogen FREE photo gallery is regularly updated with new quality, high-resolution free photos and images. To download you'll need to sign up first, and once you've signed up you can also download multiple images in a ZIP file by using our handy lightbox function.
Just make sure the images are hosted through a secure image hosting company to get the best effects of the photograph downloaded. You can compare reliable cheap hosting plans before selecting one.

Photogen images are free for commercial and personal use.
The images are not for resale, or redistribution. Their download and usage is subject to our Terms of Use."

http://www.photogen.com