Shutterstock - Shutterstock is a provider of stock photos, illustrations, and vector art. The website allows individuals to purchase a subscription and download copyrighted art for creative projects. Read more about Shutterstock.
Fotolia - Discover more than 35 million cheap royalty-free images, vectors and videos.
Pixabay - Over 270,000 free photos, vectors and art illustrations
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Snapwire - Real photos by real people
Twenty20 - Project management & estimating for construction companies