Directives, Instructions, Specifications & Standards

ANSI coordinates the U.S. voluntary consensus standards system, providing a neutral forum for the development of policies on standards issues and serves as a watchdog for standards development and conformity assessment programs and processes.

Power and energy, biomedical and health care, information technology, telecommunication, transportation, nanotechnology, information assurance, and many more.

Energy, economics, geopolitical risk, sustainability and supply chain management.

ISO is the world’s largest developer of voluntary International Standards.
NOTE: Because 'International Organization for Standardization' would have different acronyms in different languages the founders decided to give it the short form ISO; derived from the Greek isos, meaning equal.

The National Reconnaissance Office designs, builds and operates the nation's reconnaissance satellites. NRO products, provided to an expanding list of customers like the Central Intelligence Agency (CIA) and the Department of Defense (DOD), can warn of potential trouble spots around the world, help plan military operations, and monitor the environment.

includes some Standardization Agreements (STANAGs)

The National Information Standards Organization (NISO) develops and promotes technical standards used in a wide variety of information services. NISO is a nonprofit association accredited as a standards developer by the American National Standards Institute (ANSI).