STACEE
- Solar Tower Atmospheric Cherenkov Effect Experiment.
- http://www.astro.ucla.edu/~stacee/

Homebrew Cosmic Ray Muon Detector
- Schematics and diagrams for the Geiger-Mueller detectors and electronics. Information on cosmic rays, variations and other forms of detection such as scintillation.
- http://www.cosmicrays.org/

CHICOS - California HIgh school Cosmic ray ObServatory
- An active research array for the detection of ultra-high energy cosmic rays. The events CHICOS is designed to observe are single subatomic particles slamming into the Earth's atmosphere with the energy of a brick falling from a rooftop. It is a coll
- http://www.chicos.caltech.edu/

WIZARD Experiments
- Space-borne experiments like PAMELA, SilEye, NINA and balloons. Downloadable results, articles and pictures.
- http://wizard.roma2.infn.it/

High Resolution Fly's Eye Experiment (HiRes)
- Large air fluorescence cosmic ray detector.
- http://www.cosmic-ray.org/

Pierre Auger Cosmic Ray Observatory
- Aims to observe the highest-energy cosmic rays.
- http://www.auger.org/

ICRC 1995
- 24th International Cosmic Ray Conference in Rome, Italy, August 28 - September 8, 1995.
- http://www.roma1.infn.it/ICRC95/icrc95.html

Athens Neutron Monitor
- Observing cosmic ray neutrons. Background information, explanation of worldwide monitor network, detector description, publications, links.
- http://cosray.phys.uoa.gr/

ICRR
- Institute for Cosmic Ray Research, University of Tokyo.
- http://www.icrr.u-tokyo.ac.jp/