Wikipedia
Snapwire is a platform that connects young photographers with brands, publishers, small businesses, and creatives around the world looking for specific images that cannot be found through traditional stock photo services. Buyers post a creative image brief (called a Request) and photographers respond by submitting their photos through Snapwire website or iPhone app. Winning photographers are awarded and paid. Aside from Requests, Snapwire regularly runs creative Challenges concern popular image needs. Challenges are curated by Snapwire and are open to the public.
Snapwire has a searchable library of authentic photos called the Marketplace, which consists of hand selected images with varying price points. In July 2014 the number of photos in Marketplace had reached 150,000; in October 2014 this number exceeded 500,000 images. Every photo on the platform has a royalty-free license.