Physnet: The Physics Departments and Documents Network
Serves information from physics departments and institutes worldwide: departmental information, locally stored documents, authoring tools, free access journals, jobs, conferences and education material.
http://physnet.physik.uni-oldenburg.de/PhysNet/

Physics on MathPages
Articles, leaning towards a mathematical description, on a wide range of topics in physics.
http://www.mathpages.com/home/iphysics.htm

Physics Today
The flagship publication of the American Institute of Physics (AIP). Provides feature articles, news stories, analyses, book and product reviews, a searchable job database, and obituaries.
http://www.physicstoday.org/

The Net Advance of Physics
MIT resource providing discussions at various levels of sophistication that cover all areas of physics.
http://web.mit.edu/redingtn/www/netadv/welcome.html

Eric Weisstein's Treasure Trove of Physics
Online encyclopedia of physics terms and formulas. Full searchable, and also browsable alphabetically and by topic. Part of Eric's Treasure Troves of Science.
http://scienceworld.wolfram.com/physics/

Physics Central
Find out how physics is part of your world. We answer your questions on how things work and keep you informed with daily updates on physics in the news. We describe the latest research and the people who are doing it and show you physics in action.
http://www.physicscentral.com

Physics News Graphics
Diagrams (with captions) appearing in various AIP publications, sorted by category or by date.
http://aip.org/mgr/png/

PhysLINK
Links to physics departments, physical societies, journals, job information, and other physics related information.
http://www.physlink.com/

Physics and Astronomy Classification Scheme (PACS)
Hierarchical numbering scheme, developed by the American Institute of Physics, used to identify fields and sub-fields of physics.
http://publish.aps.org/PACS/

Physics Post
A tutorial and article driven community. Votes, science news and a discussion forum.
http://www.physicspost.com/

Physics Central
A page on modern physics, such as quantum mechanics and black holes, and some mathematics.
http://www.physlib.com/

World Year of Physics 2005
International effort to celebrate the 100th anniversary of the Miraculous Year (1905) and raise public awareness of physics.
http://www.wyp2005.org/

What You Want To Know About Physics
Summarizes in simple language, without advanced mathematics, the foundations of physics. The index gives direct access to selected topics.
http://kr.cs.ait.ac.th/~radok/physics/

PhysOrg.com
Physics news, semiconductor technology news, space news and a scientific forum.
http://www.physorg.com/

The Physical World
Answers to simple physics questions, from New Scientist.
http://www.newscientist.com/lastword.ns

Physics Today
News, feature articles, reviews, obituaries, and other items from the monthly magazine for the physics community.
http://www.physicstoday.org/feed.xml

Scientific American - Questions That Plague Physics
A conversation with Lawrence M. Krauss, chair of the physics department at Case Western Reserve University.
http://genesis1.phys.cwru.edu/~krauss/0804082.pdf

PhysicsWeb
Physics news, jobs, equipment buyer's guide, and events.
http://physicsworld.com/cws/home