Clocks & Watches
- American Watchmakers-Clockmakers Institute (AWCI): Supporting and advancing horology through education and cooperation
- The Antiquarian Horological Society (AHS): The Story of Time
- The British Horological Institute (BHI): Train to be a clock or watchmaker with BHI distance learning courses
- Historical Clock and Watch Research: THE web site for researching the maker of your clock or watch
- The Horological Foundation: Antique clocks, watches, barometers, addresses, makers & names
- Horology – The Index (NAWCC): The most extensive collection of horological resources on the internet
- Love to Know: Collectible Mantel Clocks
- The Long Now Foundation: To foster long-term thinking
- The National Association of Watch and Clock Collectors, Inc. (NAWCC): The largest horological organization in the world
- National Institute of Standards and Technology (NIST): “Official US Time”
- Tascione: Celebrating 30 Years of teaching Horology through Videos
- ThePuristS.com: Discussion forums on timepieces
- The Watch Academy: A history of horology, clockmaking, and watches
Jewelry
- American Gem Society (AGS): Find an Appraiser
- Gemological Institute of America (GIA): All about Gemstones
- International Gem Society (IGS): Information and educational services for everyone interested in gemstones.
Museums
- The American Clock and Watch Museum: Celebrates the innovation and artistry of the clock and watch industries
- The Canadian Clock Museum: Showcasing the heritage of Canada’s many clock manufacturers and sellers from the early 1800s to the present time.
- Willard House and Clock Museum: The center of early American clockmaking
Restoration or Sale
- Antique Watch Repair: Antique Swiss and American mechanical watch repair specialists since 1987
- Jules Borel: Watchmaking supplies, parts, and tools
- AbbeyClocks: Repair of mechanical clocks
- Pinnacle Supplies/Ipower: Polishes, tools, and other supplies for watches & jewelry
Solvang & the Santa Ynez Valley
Other
- The Art and Antique Information Network, inc. (AAIN): Software for antique, art, & collectible dealers
- The International Society of Antique Scale Collectors (ISASC): A dedicated group for the collection, study and preservation of antique scales, weights and measures