The American Philatelic Society
The British Columbia Philatelic Society
The British Empire Study Group (BESG)
The British North America Philatelic Society
The Cape & Natal Study Circle
The Israel Philatelic Federation
The Philatelic Federation of South Africa (PFSA)
The Philatelic Society for Greater Southern Africa (PSGSA)
The Rhodesian Study Circle
The South African Collectors’ Society (SACS)
The Vatican Philatelic Society
Association Philatélique du Loiret
Greater Mound City Stamp Club
Victoria Stamp Club (BC, Canada)
Stampboards - Postage Stamp Chat Board & Stamp Bulletin Board Forum
Stamporama - The Stamp Club for People Who Love Stamps
Stamp Bears Forum
Stamp Community Forum
The Stamp Forum (TSF)
Find Your Stamp's Value
Rocky Mountain Philatelic Library
Stamp Smarter - Philatelic Learning Center
Stories Behind the Stamps
The Digital Philatelist - For Modern Stamp Collectors
The Philatelic Database
Bundu Technology Ltd - Hardware and Software Consulting and Design Services
Laserwrite Promotions for Rubber stamps and Self Inking Stamps, Melbourne, Australia
Model Engineering & Other Hobbies