Undeveloped or Vacant
- Private Islands Online
- Offers listings of islands for sale or rent in the US, Caribbean, Canada, Oceania, and Europe.
- Realtors Land Institute (RLI)
- Organization of professionals specializing in land brokerage. Includes details on membership, property search, and an auction calendar.
- Zarzar Land
- Sells land around the world on e-Bay. Includes profile, FAQs, and links to available properties.