- Al Globus Space Settlement site (principal author of the NASA Space Settlement site)
- Creating a Solar Civilization – essay by Kim Peart
- Cygo’s Space Initiative – Asteroid mining, space product concepts, etc.
- 4Frontiers – emerging space commerce company focused on the settlement of Mars
- Hobbyspace.com Life in Space links – Lots of links
- The Mars Society – to further the goal of the exploration and settlement of the Red Planet
- The Moon Society – to further the creation of communities on the Moon involving large-scale industrialization and private enterprise
- Paths to Space Settlement – Slides from a 2008 talk by Al Globus
- Space Architect – spacearchitect.org is the official website of the Space Architecture Technical Committee of the American Institute of Aeronautics and Astronautics
- Space Frontier Foundation – People dedicated to opening the space frontier to human settlement
- Space Settlement – Mike Combs’ space settlement pages, now hosted by the NSS Chicago Chapter, include a good FAQ
- Space Settlement Institute – A think tank dedicated to finding ways to make space settlement actually happen in our lifetimes. Sponsors of the Space Settlement Initiative.
- Space Settlement Progress – Blog by John Jossy on cutting-edge technology enabling settlement of the solar system and beyond.
- Space Studies Institute – Research foundation created by Gerard K. O’Neill
- Sylvia Engdahl’s Space Subsite – Science fiction author’s views on “Why I believe colonization of space is essential to the survival of humankind”, space quotes to ponder, good set of links
