US Government Web Services and XML Data Sources
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US Government Data Sources

US Government Web Services and XML Data Sources

Welcome to is an index to publicly available web services and XML data sources that are provided by the US government. indexes data sources from all 3 branches of government as well as its boards, commissions, corporations and independent agencies.  

Mobile Apps
As a demonstration of the utility of these publicly available data sources, some of them have been used to create mobile web apps which can be installed on your mobile device or accessed directly from the web browser of any tablet or smart phone! The apps are free and are available at the Google Chrome Web Store, the Firefox Marketplace and the App Store.

To bypass the marketplaces (recommended) and install directly on iOS (Apple), Android or Windows devices, click the Direct Link and use the "Add to Home screen" feature of the Safari, Chrome, Firefox or Dolphin web browsers. Windows Phone users will use the "pin to start" feature of the Internet Explorer browser.

Description Chrome
Windows, OS X, Linux, Chromebook and mobile devices [via Cordova]
Firefox 1
Firefox OS
Android, Fire TV, Fire Phone, and Fire Tablets
Mobile Drug Guide Icon Mobile Drug Guide 2
Search for information about drugs in the nation's prescription formulary based on the drug's name, active ingredients, NDC (National Drug Catalog) or, in the case of a pill, its physical characteristics (i.e. color, shape, scoring or imprint)

Direct Link:
Mobile Web Application
MDG Icon MDG Icon MDG Icon
USGovXML Mobile Apps Icon USGovXML Apps
An eclectic mix of mobile web apps for outdoor enthusiasts, environmentalists, volunteers and more ... Get current weather and forecasts for any location within the US; Get information about federal recreational facilities, threatened and endangered species, federally supported health centers, and more ...

Direct Link:
Mobile Web Application
Alternative Fuels Station Locator Icon Alternative Fuels Station Locator
Search for alternative fueling stations across the United States. Alternative fuels include biodiesel, compressed natural gas (CNG), ethanol (E85), electric charging, hydrogen, liquefied natural gas (LNG) and propane (LPG).

Direct Link:
Mobile Web Application
Vehicle Safety Recalls Icon Vehicle Safety Recalls
Search the National Highway Transit Safety Administration (NHTSA) database for vehicle safety recalls.

Direct Link:
Mobile Web Application
VSR Icon VSR Icon VSR Icon
Five Star Safety Recalls Icon Five Star Safety Ratings
Provides detailed information about the results of controlled crash and rollover tests conducted on new cars at NHTSA research facilities.

Direct Link:
Mobile Web Application
  FSSR Icon   FSSR Icon   FSSR Icon
HIV/AIDS Mobile Drug Guide Icon HIV/AIDS Mobile Drug Guide
Provides access to the latest, federally approved HIV/AIDS medical practice guidelines, information on HIV/AIDS treatment, clinical trials and other HIV/AIDS-related research information for health care providers, researchers, people affected by HIV/AIDS and the general public.

Direct Link:
Mobile Web Application

1 - Firefox Marketplace discontinued support for Android, Desktops and Tablets on March 29, 2016. Learn more
2 - Best Seller (Free) in Amazon > Appstore for Android > Medical > Reference

SMART (Substitutable Medical Apps, Reusable Technologies) is one of four Strategic Health IT Advanced Research Projects (SHARP) funded by the Office of the National Coordinator for Health Information Technology. SMART provides a unified mechanism for diverse applications to interact with medical record data. SMART Apps built against the SMART API can be embedded within any SMART Container.

A SMART Container is, most often, an Electronic Medical Record (EMR) system used by physicians but might also be a Personal Health Record (PHR) such as Indivo used by patients, a data-analytics platform such as i2b2 used by researchers or a clinical data repository system for HIEs (Health Information Exchange) such as Mirth Results. A partial list of the systems and companies that have already implemented SMART can be found here.

USGovXML has created rxInfo: A suite of SMART Apps. The rxInfo suite of SMART apps are available ... here .... If you have implemented or are in the process of implementing a SMART container and need SMART apps to test your implementation, we would like to hear from you! Send us a link to your container’s sandbox when you contact us.

Are you a C#/.Net developer? Do you want to create a SMART app? If the answer to both questions is yes, has created a sample SMART web app that is available as a Visual Studio 2008 project. The project can be downloaded from: Make sure you read the included readme.txt file for details.

Help for Homeless Veterans
VetHelp is a web based application for tablets and smart phones that provides easy access to resources needed by homeless veterans and the people that help them; when they need it and where they can get it. VetHelp was designed with the homeless veterans of Monmouth County, NJ in mind. However, veterans all over the United States should find it to be useful. VetHelp is available at:

The USGovXML HealthGuide is a comprehensive and authoritative source of medical information; information contained in U. S. Department of Health and Human Services databases. With it's search capabilities, you can obtain trusted and reliable information about drugs, medical conditions, health care providers and support groups. The HealthGuide is also a conduit to even more detailed information hosted in U. S. Department of Health and Human Services web sites. The HealthGuide is available at

Developer Resource Hubs
Many federal agencies have begun to recognize the needs of independent developers and are making efforts to ensure that those developers have the information they need. Rather than requiring that developers track down publically available data sources and APIs, the agencies listed below have consolidated them into Developer Hubs on their web sites.

Census Bureau
Centers for Medicare & Medicaid Services
Consumer Financial Protection Bureau
DEA - E-Commerce Program
Department of Education
Department of Energy
Department of Labor
Department of Transportation
Energy Information Administration
Environmental Protection Agency
Federal Aviation Administration
Federal Communications Commission
Federal Motor Carrier Safety Administration
Federal Register
Federal Reserve Bank of St. Louis
General Services Administration
HHS - Health Indicator Warehouse
HHS - Medicare
Millenium Challenge Corporation
National Aeronautics & Space Administration
National Archives & Records Administration
National Broadband Map
National Climate Data Center
National Institute on Drug Abuse
National Library of Medicine
National Renewable Energy Laboratory
National Resource Directory
National Weather Service
Small Business Innovation Research
Social Security Administration
Substance Abuse & Mental Health Services Administration
U.S. Courts - PACER
U.S. Geological Survey
White House

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