To find free stock photography, the first address you might want to visit is flickr, at flickr what you want to do is make an advanced search with creative commons - some rights reserved license, remember to mark commercial usage. Most of the images require a credit to the author, so the image above is by flickr member jerine.To be able to make a comparison between sites that offer free stock images and photographs, I searched for the term colors. Definitely, flickr has the most number of choices, however due to the number of choices available and due to fact that the contributions are made often by non-professionals, you will see that images are pixellated, blurred or in low resolution. Image above from flickr user pfig.This is yet another image from flickr, the image was low resolution because many members do not permit high-resolution stock images to be freely available for commercial work, this is a drawback as images cannot be used in magazines or for print purposes, but they are still okay for webusage. The image above is from flickr user 2493.There are also many free to use professional stock images at flickr, the image above is contributed by Nagarjun. However, searching among images is usually time consuming, and finding high-resolution images is a not easy, as I said most of the images are limited in resolution. One other issue is because the images use creative commons license, attribution is required.This is yet another example from flickr, you will realize most images look so beautiful while in thumbnail, but once you click them you see that the macro focus did not work, that is how you could spent hours and not find your image. The image above is from flickr user Golden_Ribbon. So my conclusion of flickr for free stock images is three stars. ***Pixelperfectdigital has some of the coolest images, but they allow you to use their images for both personal and commercial projects (and create derivative works based upon it), but only if you credit pixelperfectdigital.com for the original creation. Image above - pixelperfectdigital.Now, their images are really superior, good focused, high-quality, high-resolution stock photos, but the creative commons attribution license, i.e. CC Photography. Their business model is based on also links to other stock photo services, which I will not comment.Their images are so good that even if you hate putting text on images for attribution, you would most probably use theirs, especially the macroshots are great. I give the pixel perfect digital images, for their free stock photography with creative commons licensing four stars ****MorgueFile has a good collection of stock images, and you are allowed to copy, distribute, transmit the work and to adapt the work. Furthermore, most importantly, attribution is not required. But of course you cannot use the works as stand alone and not claim ownership either. Images are not superb but can do the work..This is yet another image taken from morguefile which is a place to keep post production materials for use of reference, an inactive job file containing free high resolution digital stock photography for either corporate or public use. Some images are rather fuzzy, but there are many images, and I give them five stars *****.You already should know DeviantArt, but did you know that you could use it to search for stock photography and stockart as well? Most images require attribution, however you could find really high quality images. The image above is cropped from Catherine Aimei's original photo which is much better, however I wanted to focus the super-colorful theme for the post.. Search deviantart stockart images to find the goodies. Deviantart gets a solid five *****.Another great site is called unprofound, founded by Jim who began the site after having trouble finding quality, public domain photos online to use in his designs. People just seemed interested in flaunting their portfolios or charging absurd amounts of money to license a photograph so he bought a camera and bothered his photographer friends until learning to take good photos shooting what he would needed, and some extras. Eventually, he realizes that he has a collection of photos going to waste so he puts them online for other people to use without payments! it is gratis photo people. Photos can be used commercial, without attribution or credits, but of course some mention would be good he says. I give Jim a solid five stars for his efforts - unprofound *****OpenPhoto is another website where you will be able to browse for free stock photography for commercial usage, mostly the images are contributed by members and require attribution, i.e. the creative common share-alike license which makes sure you cannot copyright the works for yourself, the image above is from Adrian Van Leen, some images like the one above are licensed public domain, once placed in the public domain, i.e. the work may be freely reproduced, distributed, transmitted, used, modified, built upon, or otherwise exploited by anyone for any purpose, commercial or non-commercial usage.This is another image from openphoto, the image above is from Sarah Klockers, this one is copyleft, meaning I should credit the photographer. Overall, there are many stock photos here but Image dimensions are rather not so big, so I give Open Photo three stars ***Freerange has some quite wonderful photos in its archive, but requires registration, and pushes you to comment, I can say that the images are usually really good, and the choices are wide, the image above is Chance Agrella. Freerange says that itwas formed with the goal to provide quality stock photos for commercial and non-commercial use. For free. We feel that free stock photos can be good photos.Freerange is at freerangstock.com and they have a lot of Stock Images and Stock Photos at their website. These CC stock images contributed by members are mostly good and professional, the community is also very active with comments. As images are usually high-resolution, magazines can also use, attribution is required, image above Merelize. I give them five stars. *****Got this image from publicphoto.org, the owner of the site says he is taking the photos and uploading them, and we are free use them however we cannot change them and get a copyrightfor it. He says that all images are free for personal or business use. They are in public domain. You can modify them, sell them or make money from them. I give him four stars. ****Stockvault offers free textures and photographs, some of them are being exceptionally great. This image above is from Nicolas Raymond. Photos are free for personal, educational and non-commercial usage. But not for commercial usage, thus I give them two stars only **.Pixabay has some images that are licensed as Public Domain, what does it mean for you? Public Domain Images can be used for free without any attribution, and also for commercial usage, so that is really great. Images are also usually very high resolution, and there are many images.This is yet another image from pixabay, these images look really good, run by German guys, with proper education, and a good interface with a business model of listing premium images too, I give Pixabay five ***** stars.Exerpt:To find free stock photography, the first address you might want to visit is flickr, at flickr what you want to do is make an advanced search with creative commons - some rights reserved license, remember to mark commercial usage. Most of the images require a credit to the author, so the image above is by flickr member jerine.To be able to make a comparison between sites that offer free stock images and photographs, I searched for the term colors. Definitely, flickr has the most number of choice..