- www.seatguru.com (by tripadvisor)
- www.awardwallet.com (has apps)
- 航旅纵横(app in iOS and Android)
- www.tripcase.com (hotel and flight itineraries. Send confirmation letter to it and it will sort all itineraries.)
- www.booking.com (credit card leakage issues reported in Europe. Don’t use it for Europe hotels. US is OK.)
- www.roomkey.com (chain hotel selection)
- www.hotwire.com (no refund)(may also be good for car rental)
- www.airbnb.com (high end home stay)
- www.tripadvisor.com (also has very good hotel reviews, destination recommendations)
- www.yelp.com