Hotwire offers a set of open APIs that can be used to power both travel planning and travel shopping applications. Two great examples are the Hotwire Hotel Deals API, which provides a powerful query mechanism for finding the best value hotel rates on Hotwire.com, and the Hotwire TripStarter API, which provides historical Air and Hotel rate information to help answer questions like "Which destinations offer the best value?" and "When's the best time to go?"