CitizenPlane, a leading distribution software company for airlines and tour operators, today announced the launch of the CitizenPlane Operating System (OS) for mid-tier carriers and fast-growing airlines. To realize new levels of commercial opportunity with solutions that are only a click away, the modular, all-in-one platform enables airlines to control offer creation, revenue optimization, distribution, and delivery.  The industry-first offering leverages CitizenPlane’s recent acquisition of Passenger Service System (PSS) provider Travel Technology Interactive’s (TTI) Zenith...