- The Amateurs' Digest Swap and Shop Page
- BONAP Cactaceae Listing USA Distribution Maps
- Cactusbase Review Cactus Database Software
- Cacti_etc Home Page Includes interesting files on Soils, Artificial Lights, Biological Controls and Evolution of Cacti.
- Cactus en Vetplanten (In Dutch but with a full English and a full French section)
- On-line Guide to the positive identification of Members of the Cactus Family
- Cactus-cz Server about cacti and succulents, books, brochure, journals, CD-ROMs, concentration - authors, webhosting, free
links, advertisements, web bbs
- Echinocereus-Homepage E-zine from Martina and Andreas Ohr (Germany). Updated monthly on the first day of the month
- Field Collector Acronym Database
- Field Number Database
- GardenWebs Cactus and Succulent Forum
- James Mauseth Labs Professor James Mauseth at the University of Texas in Austin heads an important school of biological research into the Cactaceae. This website gives information about their research, publications and gives a complete bibliography.
- Jan's Kakteenseite An extensive site in German which a good entry point for the German Cactus Web
- Kaktusy i Inne (Cacti & Others) Good starting points for Polish Links on Cacti and Succulents.
- Links to Polish Cactus and Succulent websites
- Mark Olson's Images of Dry Tropical Habitats
- Interactive Mesembs A major database of Mesemb information
- The Paradise Brazilian Cacti and Bromeliads by Pierre Braun and Eddie Esteves
- Le Cactus Francophone A very comprehensive and well organised index of French language Cactus and Succulent information by Yann Cochard
- Thai Cactus An important entry point for information on cacti and succulents in the Thai langauge
- The Succulent Plant Page Organised by Richard Hodgkiss, includes a picture gallery of Asclepiads and Haworthias.
- Succulent Plant Resource
- Site of Journal 'Cultivar' Articles, photos about unusual colour forms of cacti and succulents in Russian and English. Owned by Valerij Kalishev, Chelyabinsk.
- User contributed database for images and info on caudiciform and pachycaul plants