The American Philatelic Society
Cape and Natal Study Circle
Orange Free State Study Circle
The Rhodesian Study Circle
South African Collectors’ Society
South Africa Collectors' Society (Legacy website)
South African Philatelic Dealers Association
Transvaal Study Circle
Botswana Post
Eswatini Post & Telecommunications
Namibia Post Philatelic Services
South African Post Office
South African Post Office Philately
AlbumEasy - Free software for stamp album page layout and design
Find Your Stamp's Value
ImageSleuth - a free retroReveal replacement
KGVI Stamps - British Colonial Stamp Site Links
Rocky Mountain Philatelic Library
The Philatelic Database
Toke Nørby's Perpetual Calendar
WADP Numbering System
Deverell / MacGregor - The Rhodesias and British Africa
Henk de Lange - SA Stamps
Krone Stamps - World-wide. Specialising in Southern Africa
Steven Zirinsky Stamps -- British Africa