Ad Astra
Bi-monthly magazine of the National Space Society - articles on all aspects of space development and colonization.

Artemis Magazine
Nominally quarterly magazine; both real science and technology for near-term colonization of space, and hard science fiction stories on the same subject.

Frontier Theory
Articles on why humanity needs a frontier, some of them focused specifically on space colonization.

Lunar Base Quarterly
Berlin publication with conference and meeting notices and forums for discussion of development of the Moon.

Moon Miners' Manifesto
Monthly publication with articles on development of the Moon, Mars, and the rest of the solar system.

Space Age Publishing Company
International space news and events updated daily; emphasis on private enterprise and lunar enterprise; subscription required for most material.

Space Colonization: A Home for the Dreamers Among Us
Collection of articles and essays on space and space development; publishes suitable submitted articles.

L5 News
Back issues of the L5 Society newsletter, from before it was merged into the National Space Society.

The Spacefaring Web
Archive of John Carter McKnight's essays on creating a space-faring civilization.