The TripAdvisor Offline City Guides are now a lot more useful than when first launched late last year. Currently covering 52 major cities around the globe (including New York, Sydney, Tokyo and, yes, Bangkok), the guides grant you access to the sort of travel information you need for every trip: from top restaurants and hotels to city maps. The best thing is it’s all pre-loaded—so you don’t even need an internet connection to use the app. Oh yeah, and it’s free. Available for iPhone, iPod Touch and Android phones. More information at www.tripadvisor.com/apps-icityguides.