Summary of events:
  • Nineteen terrorists hijack four airliners in the eastern United States.
  • Two planes crash into the World Trade Center in New York City, one in each tower. Both towers completely collapse, due to the intense flames.
  • One plane crashes into the Pentagon.
  • One plane crashes in central Pennsylvania after a passenger rebellion. It was thought to have been targeted for Camp David, Maryland, the Capitol building, or the White House.
  • All air traffic is grounded and all airports closed across the United States; international flights are diverted to Canada. Financial markets are closed.
  • U.S. skyscrapers and most government and public complexes are evacuated, and American armed forces worldwide are placed on high alert.
  • The prime suspect is Osama bin Laden, who denies involvement.
If possible, please find the most appropriate category for the site:

  • If the site is a news article, please submit it to the News and Media category.
  • If the site shows only photos of the incidents, please submit it to the Image Galleries category.
  • If the site is for discussing the incidents, please submit it to the Chats and Forums category.
  • If the site focuses on helping or giving and includes information on how to do so, please submit it to the Assistance category.
  • If the site is about any attacks against groups of people which is related to this incident, please submit it to the Backlash category.
  • If the site focuses on the victims of the attacks (including those holding lists of survivors), please submit it to the Victims and Survivors category. Memorial pages should be submitted to the In Memoriam category.
This category may not be the most appropriate place for your submission:
Sites that provide analysis and commentary on the September 11 terrorist attacks.
Sites that provide analysis and commentary on the September 11 terrorist attacks.

Background information on the US government�s efforts to prevent terrorist attacks can be found in Background_and_History.

Background information on the terrorists and terrorist organisations involved can be found in Terrorists_and_Suspects.

Analysis and commentary focusing on the War on Terrorism or on the War in Afghanistan can be found in Specific Conflicts: War on Terrorism and in Afghan Civil War.

This category lists works of art: music, poetry etc., relating to the attacks of 9/11.
Information on past terrorist attacks by Al-Qaida, and on efforts of US governments to prevent them.
Sites about harassment, discrimination, and hate crimes against people in the wake of the attacks on the World Trade Center and the Pentagon on September 11, 2001.
This category lists sites where people can join discussions on the incidents.
Please submit sites which include not only chats and forums, but news, information, pictures or memorials, in other, more appropriate subcats of September 11, 2001.
Events, sites, ceremonies, etc. that commemorate 9/11.
Please submit sites that commemorate 9/11 or have information about events, ceremonies, etc. that commemorate 9/11.
Information on and virtual documentation of exhibitions dedicated to the events.
Information on and virtual documentation of exhibitions dedicated to the events.
This category contains image galleries, slide shows and video documenting the attacks of September 11, 2001, covering the attacks in New York, the Pentagon attack, other events on September 11, and the worldwide response.

Image galleries focusing on events in New York only, or events at the Pentagon only, should be submitted in the appropriate subcategories.

Image galleries showing events in memory of September 11 are supposed to be listed in Commemoration.

Commercial videos and DVDs should be submitted in Shopping.

Image galleries covering not only the attack on the Pentagon, but events in New York and the worldwide response, are supposed to be listed in September 11, 2001: Image Galleries.

Image galleries showing events in memory of September 11 are supposed to be listed in Commemoration.

Commercial videos and DVDs should be submitted in Shopping.

This category is for pages focusing mainly on the 11 September 2001 terrorist attacks and hijackings. Personal pages may include a combination of images, stories, news, essays, or message boards.
Sites which are primarily memorials and tributes to the victims should be submitted to In Memoriam.

Sites which are primarily collections of pictures should be submitted to Image Galleries.

Individual message boards and mailing lists should be submitted to Chats and Forums.

Information on single terrorists involved in the attacks and the terrorist organisation Al-Qaida, and on suspects at trial for being involved in the planning of the attacks.
This category contains information on United Airlines flight 93 and the passengers. Originally on a flight from Newark, New Jersey to San Francisco, California, the plane crashed shortly after being hijacked in Somerset, Pennsylvania.
This category contains information on victims and survivors of the attacks.

Please make sure this is the most appropriate place for your site.
For memorials dedicated to a specific person, a submission in the location-specific subcats for World Trade Center, Pentagon and Flight 93 will be more appropriate.

Sites reporting on events, ceremonies, etc. that commemorate 9/11 should be submitted in Commemoration.

Sites including personal thoughts and analysis should be submitted in Personal Pages.

Sites focusing on patriotic issues should be submitted in United States: Society and Culture: Patriotism.

Special note: as a matter of policy, the Open Directory classifies and lists sites based only on content visible at the time of review, and not on content that the webmasters intend to make available in the future. Unfortunately, we cannot list sites in this category that promise to add memorial pages in the future but do not currently have personal information about any victims.

This category is dedicated to the terrorist attacks on the World Trade Center in New York.
This category is dedicated to the terrorist attacks on the World Trade Center in New York.

It contains sites with information on the attacks and the rescue efforts, image galleries, personal stories of survivors, and memorials to the victms.

Sites providing information on architecture and structural history of the World Trade Center buildings, proposals for the reconstruction and for the redevelopment of the site are listed in New_York_City: Manhattan: Arts_and_Entertainment: Architecture: World_Trade_Center.