Columbus Guides - World Travel Guide: Tonga: Tourist and business travel information with facts on climate, visa, health, passport, currency and customs requirements.
iExplore Community - Tonga: Adventure and experiential travel agency provides traveller-written journals, reviews and photos.
Lonely Planet - World Guide: Tonga: Comprehensive facts and advice for traveling along with background material on the culture and history of the country.
Tonga Travel and Beach Guide: Tonga travel and vacation information with maps and pictures of Tongan beaches, resorts, hotels and islands.
Tonga Visitors Bureau: Features history, business, activities, culture, facts, travel and accommodation within the Kingdom.
US State Department - Tonga Consular Information Sheet: Offers general country and travel information including entry and exit requirements, safety and security, crime, health and transport.
World66 - Tonga: Travel guide based on reader-submitted information.