Tomnod is a crowdsourcing platform that allows users to collaboratively analyze and tag satellite images. It was founded in 2010 by Shay Har-Noy, Luke Barrington, Nate Ricklin, and Albert Yu Min Lin and later acquired by DigitalGlobe. Users can mark objects in satellite images of areas affected by natural disasters or search missions. The platform harnesses the power of crowds to identify areas requiring further attention through agreement between multiple users tagging the same location.