Mostly female pose reference. Lots of pose and view angle varieties, with many props but no costumes.
http://senshistock.deviantart.com/gallery
Voting 0
Interesting color related tool. One tool lets you choose up to 5 colors, and the collage wall on the left will auto select photos from Flikr that fit your color theme. Another tool lets you upload an image and it will pick out a selective palette for you based on that image.
http://labs.tineye.com
Voting 0
A very large photo library of wild life in the UK, or by UK photographers. Most, if not all, of which are properly named in either common name or scientific name.
http://www.wildaboutbritain.co.uk/pictures
Voting 0
Should still be free, albeit limited download size per 24 hr. Lots of clean and even pre-tiled textures.
http://cgtextures.com
Voting 0