A web-site directory of Signals Intelligence (SIGINT), Communications Intelligence(COMINT), Electronic Intelligence (ELINT), Cryptology, Military & National Intelligence Security Operations, and related sites.

file folder-icon Government Sites US/UK/CAN/AUS/NZ

file folder-icon Other Government

file folder-icon SIGINT Role In History

file folder-icon Equipment and Technology

file folder-icon Organizations & Others

file folder-icon Media

file folder-icon Veterans Sites

  • ASA - Army Security Agency
  • NSG - Naval Security Group
  • AFSS - US Air Force Security Service
  • Others 
file folder-icon War On Terror

folder icon Non-SIGINT related links


This is not a search engine. Everything here can be found via most major search engines. What we are doing is consolidating, weeding and cataloging, in admittedly arbitrary categories, those that we think are useful sites. Site listings may appear in more than one category. Also some of the very large and diverse sites will have more than one link listing as they often cover a wide range of SIGINT subject matter. We hope visitors find this helpful in exploring the many aspects of Signals Intelligence.

To recommend a web-site for inclusion in the directory, please use the email contact form.

Recommended sites are reviewed by actual living humans for approval/disapproval before they are included in the directory.