Cruise Lines
- Azamara
- American Canadian Caribbean Line
- American Cruise Line
- American Safari Cruises
- Carnival
- Celebrity Cruises
- Costa Cruises
- Cruise West
- Crystal Cruises
- Cunard
- Disney Cruise Line
- Holland America
- Imperial Majesty
- Lindblad Expeditions
- Majestic America - Not currently operating
- MSC
- Norwegian Cruise Lines
- Oceania Cruises
- Orient
- P&O
- Princess Cruises
- Royal Caribbean
- Regent Seven Seas Cruises
- Seabourn
- SeaDream
- SilverSea
- Star Clippers
- Uniworld
- Victoria Cruises
- Viking
- Voyages of Discovery
- Windstar
Sites with cruise line reviews and ratings by customers
- CruiseReviews.com
- CruiseMates.com
- CruiseCritic.com
- CruiseReviewsOnline.com
- CruiseDiva.com
- Frommers
- Fodors
- VacationsToGo
- Epinions.com
- Cruise Webcams
Tour Operators
- Abercrombie & Kent
- Adventures Abroad
- Brendan
- Caravan
- Collette Vacations
- Contiki
- Cosmos
- Cox & Kings
- Disney Adventures
- Gate 1 Travel
- General Tours
- Global Gate
- Globus
- Insight Vacations
- Mayflower
- Perillo
- Rick Steves Tours
- RiverCruise
- Smithsonian Journeys
- Starquest Expeditions
- Tauck World Discovery
- Tour Vacations To Go
- Trafalgar
- Travcoa
- Uniworld
- Vacations To Go
- Viking