Stamen is the developer and maintainer of Field Papers, an open source tool for humanitarian mapping that lets users annotate OpenStreetMap in areas without internet connectivity.
In 2015 Stamen partnered with Hipcamp and GreenInfo Network to develop CaliParks, a bilingual, statewide, parks search engine that brings together park boundary and management data in California with social media content from Instagram, Flickr, Twitter, and Foursquare [REF].