Marchex, Inc. operates as a mobile advertising technology company, which engages in connecting online behavior to real-world and offline actions. The firm offers driving phone calls and local leads platform through the Call-Driven segment. Its products include call, search, and display and video analytics. The company was founded by Russell C. Horowitz, Ethan A. Caldwell, Peter Christothoulou, and John Keister on January 17, 2003 and is headquartered in Seattle, WA.