Masters of Photography - a superb resource, including articles, photographs and resources on a wide variety of famous photographers
A History of Photography - an excellent one-stop history of photography with information about processes, individual artists and movements in handy hypertext format.
Photoquotes - a great source of quotations by photographers about photography
Wikipedia Photography pages. A great source of historical and technical information.
Women Photographers - a useful overview of the contribution made to the history of photography by women. Part of the UCR California Museum of Photography site
Interviews with famous photographers - a series of downloadable archive recordings of interviews with Ansel Adams, Eve Arnold, Richard Long and Andy Warhol courtesy of BBC Four.
Interviews with photographers represented in The National Portrait Gallery collection.
The Museum of Modern Art New York, Photography Collection, containing online exhibitions of Cindy Shermans Untitled Film Stills and work by Andreas Gursky, Manuel Alvarez Bravo and Aleksandr Rodchenko amongst others
The Museum of New Mexico Photography Collection, containing an online exhibition of thematically related work entitled Idea Photographic
George Eastman House International Museum of Photography and Film. Scroll down to find the alphabetical list of photographers in the collection.
New York Public Library Photography Collection, containing famous work by both Berenice Abbott and Lewis Hine
The National Museum of Film, Photography and Television in Bradford
The Victoria and Albert Museum Photography Department providing resources on specific exhibitions and great "Exploring Photography" pages
The Photographers Gallery London. Check out current, previous and future exhibitions
The Maison Européenne de la Photographie in Paris
The International Centre of Photography New York
The Australian Centre for Photography
The Canadian Museum of Contemporary Photography Collection
The Centre National de la Photographie Paris
The Huis Marseille Foundation for Photography, Amsterdam
Fotomuseum Winterthur in Zurich - an excellent collection of photographs from Robert Frank to the present day.
The Hasselblad Centre in Sweden.
Lomographics - the home of the strange and wonderful world of Lomography. Don't think just shoot!
Magnum Photos - home to some of the greatest names in photo journalism
Mari Mahr - a fantastic site featuring a range of Mahrs work since the 80s including the excellent 13 clues to a fictitious crime
Weegee - part of the International Centre of Photography collection in New York
Ralph Gibson - three portfolios of Gibsons superb, Surrealist influenced photography
Duane Michals - the master of modern Surrealist narrative photography
Joel Meyerowitz - a pioneer of colour photography
Sophie Calle - a small, but interesting, page about Calle. Part of a site which includes information about other photographers including Mari Mahr related by theme.
Anton Corbijn - famous for his images of musicians
Beat Streuli - a new take on street photography
Robert Capa - an interesting site featuring a career timeline, an article about the supposed faking of the famous Falling Soldier and an interview with a film maker
photo-eye - sort images by photographer or genre/subject. Some fascinating work by great names like Eve Arnold and contemporary photographers
artandphotographs - contains a wide variety of work and special collections including Man Rays important Electricite portfolio
Morehouse gallery -contains some great work plus a collection of Harry Callahans colour photography
Fraenkel Gallery - San Francisco, one of the most important commercial photography galleries in America
Peter Fetterman Gallery - an excellent collection of work by famous photographers including Cartier-Bresson, Helen Levitt, Robert Capa and Elliot Erwitt.
Stephen Daiter Gallery - an great collection of work by a broad range of photographers with good quality scans of their work.
Photo College - an online resources with information about Photography courses at colleges across the UK and ideas for future employment