General Travel Information
Travel Apps and Mobile Sites
MyTSA mobile website & iOS app 
"My TSA" provides a tool to find out if an item is allowed in your carry-on or checked baggage, information on ID requirements and liquids rules, tips for packing and dressing to speed through security, and real-time operating status for U.S. airports from the Federal Aviation Administration (FAA).
Smart Traveler app for Android & iPhone 
Smart Traveler, the official State Department app for U.S. travelers, invites you to see the world with easy access to frequently updated official country information, travel alerts, travel warnings, maps, U.S. embassy locations, and more.
Find Your Embassy mobile site 
Use your mobile phone to search, find, and contact the nearest U.S. Embassy anywhere in the world. The State Department's m.usembassy.gov gives international users maps and contact information for U.S. embassies and consulates along with access to travel alerts and warnings. The site is accessible on any Web enabled mobile device and requires no download of application software.
Alternative Fuel Locator mobile site 
Find fueling stations for your alternative fuel vehicle on-the-go with the U.S. Department of Energy's Alternative Fueling Station Locator. The locator works on any mobile Internet-ready device and allows drivers to find the five closest biodiesel, electricity, E85 (ethanol), hydrogen, natural gas, and propane fueling sites. It uses familiar, easy-to-navigate Google technology to map fueling stations, list contact information and business hours, and provide detailed driving directions and an instant phone connection.
goSmithsonian Visitors Guide App for Android and iOS. 
Organizes information about the 19 Smithsonian Institution museums, the National Zoo and the downtown Washington D.C., area. Access to local and surrounding area hotels, dining and transportation is also available with the ability to book air, ground and lodging through a customized booking engine.
Library of Congress Virtual Tour app for iOS 
Whether you're onsite, at home, in a classroom or elsewhere, this app will give you a virtual tour that mirrors the Library of Congress Experience, an award-winning group of exhibitions and features that has drawn record numbers of visitors.
NPS National Mall app for iOS 
This is the official National Park Service app for the National Mall and Memorial Parks. On your next visit to Washington, D.C., use it to explore many of the most cherished cultural and historical sites in the United States-from the Lincoln Memorial to the White House. The app includes a total of 70 sites.