AB Philea: Sells Scandinavian and other worldwide issues on monthly basis.
Abel Stamp Auction: Offers U.S., UN and other worldwide issues and lots.
Auction-123: Collectors can buy and sell U.S., European, and other worldwide issues.
BidStamp: Allows listing of and bidding on stamps.
Black Swan Postal Sales: Sells issues and covers of the British Commonwealth.
Cape Stamps: Offers worldwide issues with an emphasis on those of South Africa.
Cavendish Auctioneers: Specializes in sales of British Commonwealth and other worldwide issues and lots, plus related literature.
Cherrystone Auctions: New York company specializes in postal history, rarities, and other worldwide issues.
Corbitts: British firm sells postage issues, plus coins and other collectibles.
County Philatelic Auctions: Offers British Commonwealth and other worldwide issues and lots, plus conducts regular sales.
D&T International: Specializes in Chinese issues and postal history, plus other Asian issues.
Delcampe: Collectors and dealers buy and sell worldwide issues.
Downeast Stamps: Sells U.S. issues and postal history, plus worldwide lots.
e-Stamp Auctions: Collectors can list and bid on worldwide issues and lots.
George Alevizos: Sells lots including worldwide issues and covers.
H. J. W. Daugherty: Specializes in U.S. BOB issues and covers, plus related paper materials.
Hans Grobe: Specializes in issues and postal history of Germany.
Live Stamp Auctions: Allows collectors to sell and bid on worldwide issues and lots.
London Stamp Exchange: Specializes in postal history of the British Commonwealth, plus European and South American countries.
Matthew Bennett International: Offers worldwide postal history and classics.
Negev Holyland Stamps Auctions: Specializes in issues and postal history of Israel and Palestine.
Northland Auctions: Deals in Scandinavian, U.S., and other worldwide issues.
Northwestern Philatelic Auctions: Publishes six catologues each year featuring issues of Canada and Canadian provinces, plus other British Commonwealth material from around the world.
Nutmeg Stamp Sales: Specializes in U.S. postal history and classic issues.
Olof Linder Stamp Catalogue: Features singles and sets from Sweden and other Scandinavian countries, plus other worldwide issues.
Philangles: Sells mint and used worldwide issues, covers, and lots.
Philatelic Friends: Specializes in South African and Rhodesian issues, postal history, and related material.
Philatino: Members sell worldwide issues.
Prestige Philately: Offers Australian issues and other worldwide lots.
Raritan Stamps: Offers worldwide issues and postal history with an emphasis on Russian material.
Rasdale Stamp Company: Sells U.S. and worldwide issues and covers.
Regency Stamps: Sells worldwide issues and sports memorabilia.
Robert A. Siegel: Specializes in U.S. classic issues, covers, and lots.
Robert E. Lippert Stamp Auctions: Specializes in U.S. issues and covers, plus other worldwide lots and collectibles.
Sandafayre: Covers British Commonwealth and other worldwide issues and lots.
Schuyler Rumsey Philatelic Auctions: Sells U.S. covers and issues, plus British Commonwealth and other worldwide material.
Southampton Philatelic Auctions: Features issues of Great Britain and the British Commonwealth, plus other worldwide material.
Stamp Auction Network: Multiple dealers sell worldwide issues and lots.
Stamp Auctions: Sells various worldwide lots.
Stamp Head Auctions: Allows collectors to buy and sell postal material and supplies.
Stamp Wants: Dealers and collectors can buy and sell U.S. and worldwide issues.
StampOffers.com: Allows collectors to buy and sell lots.
Stamps 4 Collectors: Offers worldwide lots.
Stamps by Themes: Specializes in French, Hungarian, and North Korean imperforates and other worldwide thematic issues.
Stamps-pl: Specializes in sales of Polish issues.
Status International: Sells Australian issues and other worldwide lots.
Tel-Aviv Stamps: Specializes in Israeli and Palestinian issues.
Treasure-Hunters Limited: Specializes in issues of China and other Asian countries.
Unistamps: Features issues and postal history of Europe, the British Commonwealth, and other worldwide nations.
Vance Auctions: Offers Canadian and British Commonwealth issues and other worldwide lots.