•  The Nucleus
• NSF's REU Website
• Cornell University Programs
• Air Force Research Laboratory
• Columbia University Materials Research

•  National Optical Astronomy Observatory
• SUNY Oswego Astronomy program in Brazil
• FermiLab
• Lunar and Planetary Institute
• German Academic Exchange Program's RISE program

• American Physical Society
• American Association of Physics Teachers
• American Astronomical Society
• AVS Science and Technology
• Materials Research Society
• ASPIRE
• Columbia Nano Initiative
• Contributions of 20th Century Women to Physics

Grad School

• AIP GradSchoolShopper.com
• PhysicsGRE.com about much more than the GRE
• Sloan Career Cornerstone Center

Jobs

• 
• SPS Jobs
• Careers Using Physics (SPS web site)