PlanGrid is construction software made for the field. Its cloud-based construction document collaboration platform is being used by major construction firms on more than 500,000 projects all over the world. PlanGrid allows plans and markups to be instantaneously shared with everyone on a construction project, no matter where they are. It lets contractors, architects, and building owners collaborate from their desktop or mobile devices across all of their project plans, specs, photos, RFIs and punchlists. The company emerged from Y Combinator in 2012 and has since secured funding from Sequoia Capital, Tenaya Capital, Founders Fund, Northgate, Box, 500 Startups, Y Combinator, Navitas Capital, and Google Ventures.