Flight Search Engines

• Skyscanner: https://www.skyscanner.net/
• Google Flights: https://www.google.com/flights
• Kayak: https://www.kayak.com/

Accommodation Booking

• Booking.com: https://www.booking.com/
• Airbnb: https://www.airbnb.com/
• Hostelworld: https://www.hostelworld.com/

Travel Insurance

• World Nomads: https://www.worldnomads.com/
• Allianz Travel Insurance: https://www.allianztravelinsurance.com/

Visa Information

• iVisa: https://www.ivisa.com/
• Project Visa: http://www.projectvisa.com/

Train Travel

• Eurail: https://www.eurail.com/
• Rail Europe: https://www.raileurope.com/

Travel Guides and Itineraries

• Lonely Planet: https://www.lonelyplanet.com/
• Rough Guides: https://www.roughguides.com/

Language Translation Tools

• Google Translate: https://translate.google.com/
• Duolingo: https://www.duolingo.com/

Packing and Gear

• PackPoint (Packing List App): https://www.packpnt.com/
• REI Co-op: https://www.rei.com/

Travel Deals

• Travelzoo: https://www.travelzoo.com/
• Groupon Getaways: https://www.groupon.com/occasion/getaways

Budget Travel

• Couchsurfing: https://www.couchsurfing.com/
• The Man in Seat 61: https://www.seat61.com/ (For budget train travel info)