SETI Central - Many news articles about the search for life on other planets.

SETI League - An international grass-roots organization dedicated to privatizing the search for extraterrestrial intelligence.

SETI Institute - Conducts scientific research on life in the universe.

SETI Australia Centre - Educational science articles from the sky survey conducted at the Parkes radio telescope in Australia.

Invitation to ETI - Forty scientists issue an invitation to extraterrestrial intelligence (ETI) to make contact with humankind.

Weak Interstellar Messages Pass Us By - Amateur radio project to detect signals from extraterrestrial intelligences.

SetiQuest - The magazine of SETI and Bioastronomy. Provides both professional and amateur astronomers with information concerning SETI (Search for Extraterrestrial Intelligence) and bioastronomy.

Keeney AstroResearch - Microwave and optical SETI located in the Greater Fort Wayne Area, Canada.

The Age of Curiosity - A proposed update to the Drake Equation that describes why the sky isn't saturated with radio signals; suggests alien civilizations may not be curious enough to contact others.

The Extraterrestrial Sermons - Masters thesis on how the reception of extraterrestrial transmissions might affect world religions.

Setiweb.org - Articles, news, resources, links, discussions, art, and forums for SETI enthusiasts. Special attention is given to the SETI@home project and assisting the users involved.

Sky and Telescope: SETI - A selection of articles from the online astronomy magazine relating to the scientific search for intelligent life in the universe.

The Search for Extraterrestrial Intelligence - General article about SETI.

Where Are They? - An overview of the results from the SETI programs. Scientific American article by Ian Crawford.

An Interview with Brian McConnell - O'Reilly interview with the author of "Beyond Contact: A Guide to SETI and Communicating with Alien Civilizations."

SETI - A brief overview of the search for extraterrestrial intelligence and Frank Drake in particular. Definitions of the Drake Equation's components and a Drake Equation calculator.

Yahoo! Clubs: SETI - Chat rooms and message boards for discussions. Registration is required to post articles and see pictures.

The SERENDIP Project - Information and news on the Search for Extraterrestrial Radio Emissions from Nearby Developed Intelligent Populations.

How SETI Works - An encyclopedia-quality article on the science of SETI.

Seti@home: The Star Maps - 69 full scale star maps for visual use with the seti@home screen saver.

The Society for Planetary SETI Research - Organization interested in planetary anomalies that may be the result of intelligent activity. With roster and bibliography.

Searching for the Aliens - Article about the search for extraterrestrial intelligence.

Pigdog Journal: Interview with SETI Astronomer Seth Shostak - A lengthy discussion with a SETI astronomer.

Signal vs. Noise - What sort of signal would satisfactorily announce an extraterrestrial intelligence as detected by radio-emission or light reception? An opinion article on what sort of signal is a SETI hit.