The majority of standards developing organizations depend on the revenue from the sale of standards to support their programs and services. But a growing number of standards organizations make access to their standards for viewing or download available for no cost. sco [at] nist.gov (Let us know) if your organization should be added to this list.
American Institute of Aeronautics and Astronautics (AIAA) - Free to members
European Telecommunications Standards Institute (ETSI) - Free standards; registration required
IPC Association - Some Free Standards
ISO/IEC Joint Technical Committee 1 (JTC1) - Approximately 200 JTC1 standards are available for free online
International Society of Automation (ISA) - Free to Members
International Telecommunication Union (ITU) Electronic Bookstore - 3 free ITU Recommendations on registration
Joint Electron Devices Engineering Council (JEDEC) - Free to members
National Fire Protection Association (NFPA) - Standards and codes free to view; registration required
National Information Standards Organization (NISO) - Some free standards
Process Industry Practices (PIP) - Free to members
RTCA Electronic Documents - Free to members
Sporting Arms and Ammunition Manufacturers' Institute (SAAMI) - ANSI/SAAMI standards are available in electronic format free of charge; there is a nominal charge for hard copies.
Underwriters Laboratories - standards are free to view
VITA Standards Organization - Free to members