Treaties
Outer Space Treaty:
http://www.oosa.unvienna.org/SpaceLaw/outersptxt.htm

US Policy
Air Force Vision 2020:
http://www.af.mil/vision

Joint Vision 2020:
http://www.dtic.mil/jv2020/jvpub2.htm

Report of the Commission to Assess United States National Security Space Management and Organization (the "Rumsfeld Commission"):
http://www.defenselink.mil/pubs/space20010111.html

International Policy
United Nations Committee on the Peaceful Uses of Outer Space
http://www.oosa.unvienna.org/COPUOS/copuos.html

Technology
Small Satellites Home Page
http://www.SmallSatellites.org

AGI Satellite Database
http://www.stk.com/resources/satdb/satdb1.cfm

The Space Report ("JSR") is issued about twice a month. It describes all space launches, including both piloted missions and automated satellites.
http://www.planet4589.org

Encyclopedia Astronautica entry on various military spacecraft
http://www.astronautix.com/craftfam/starwars.htm

Non-governmental Organizations Space-related Projects
Advanced Methods of Cooperative Security Project
http://www.puaf.umd.edu/CISSM/Projects/AMCS/AMCS.htm

Center for Defense Information Space Security Program
http://www.cdi.org/space-security

Center for International Security Studies at Maryland (CISSM)
http://www.puaf.umd.edu/CISSM/default.htm

Council on Foreign Relations
http://www.cfr.org/index.php

Federation of American Scientists Space Policy Project
http://fas.org/spp

GlobalSecurity.org Space Resources
http://www.globalsecurity.org/space/index.html