Sidestep has just rolled out its cruise planner for 2007 in beta. The tool searches a whole load of cruises lines, including the likes of Carnival Cruise Lines, Celebrity Cruises, Costa Cruises, Crystal Cruises, Cunard Line, Disney Cruise Line, Holland America Line, MSC Cruises, Norwegian Cruise Line, Oceania Cruises, Orient Lines, Princess Cruises, Regent Seven Seas Cruises, Royal Caribbean, Seabourn Cruise Line, Silversea Cruises and Windstar Cruises. Phew… that sounds pretty exhaustive to me!