Automatic Organs
A Catalog of Wurlitzer Music Rolls, de Vogel/van der Erf, Dean Organs, Decap Bros. Herentals, Large Hot Pipe Organ, Le Turlutain, Mechanical Organ Owners Society, Organola Barrel Organs, Peter Griffiths Organ Builder, Stinson Organ Co.
Electronic Organs
Dealers, Hammond, Manufacturers, Alltek Organ Keyboard Services, Clavioline, Electone CentreStage, Farfisa.org, Kimball Electronic Organ For Sale, Organ Service Corporation, OrganAssist, ORLA Organs and keyboards, Pipes 1.0, Rodgers Organ Users Group
Harmonium
Ali Akbar College Store, DMS Harmoniums, Dwarkin & Son (P) Ltd, Keshav-Music Harmoniums, Reed Organ and Harmonium Marketplace, Reed Organ Society, The Indian Harmonium, The Reed Organ and Harmonium Workshop
Organizations
AGO Chapters, Edinburgh and Lothians Organ and Keyboard Club, Halifax and District Organists' Association, Nottingham and District Society of Organists, Royal Canadian College of Organists, Royal College of Organists, Royal Society of British Organists, The Amateur Organists' Page, The Organ Music Society of Sydney, The Ulster Society of Organists and Choirmasters
Pipe Organs
Builders, Guides and Directories, Historic Organs, Individual Instruments, Organizations, Portative Organs, Dream Organs, Encyclopedia of Organ Stops, Flue Pipe Acoustics, Göteborg Organ Art Center, Het Orgel, Introduction to Church Organs, JAV Recordings, MusicLink Pipe Organ Builders and Resources, Ninotchka's Pipe Organ Page, OHS Catalog
Theatre Organs
Organists, ACT Division of the Theatre Organ Society of Austr, ATOS 50th Annual Convention, ATOS: American Theatre Organ Society, Bruce Miles, Byrd Theatre, Carolina Wurlitzer, Central Indiana Chapter of ATOS, Chicago Area Theatre Organ Enthusiasts, Inc., Colorado State University, COTOS-The Central Ohio Theatre Organ Society
AGOnLine
Online archive of The American Organist magazine's monthly tour of the internet by John Nisbet.
Choir and Organ
Classical music magazine owned by Orpheus Publications focused on choral and pipe organ topics.
Church Music and the Arts - The Organ
Many Canadian organ, choral, bell and church music links.
Church Organ Trader
Classified ads for pipe organs and parts, electronic church organs and related equipment, as well as positions wanted, in the organbuilding and the church organ musical community.
Hector Parr's Essays
Practicing the Organ; British Organs, Past Present and Future; Hymn Accompaniment; Organs and the Music Lover. Also essays on mathematics, cosmology and philosophy.
Organ Alternatives
Canadian site "dedicated to the organ as a performing instrument, and to its future". Online newsletter in Adobe Acrobat format.
Organ Composers: Index of Organ Composers
Listed by time period and geographical region with individual biographies and selected works. By Cynthia Dawn Wells.
ORGANfax
Links site for the organ and keyboard world. UK bias, but has international scope.
Organs and Organists
Canadian site with many links to organs in Québec, Canada and the world.
PIPORG-L
Electronic mailing list devoted to organs (pipe and electronic), organists and organ music.
St. Albans Organ Museum
Currently has two theatre organs, four cafe organs worked by punch-card and numerous other instruments including music boxes and a self playing violin.
The Organ Classifieds
Free organ-related classified ads for items bought or sold, organists and positions available, concerts and recitals.
The Organ Connection
Photos and details of selected feature organs; articles on featured composers; MIDI files.
The Organ Forum
A discussion site for all topics related to the King of Instruments.
The Organ Magazine
British publication. Archived issues, online reviews and classifieds, events calendar, subscription information.
The Organ Web Ring
100+ sites by and about organs, organists, organ music, organ builders, organ service, pipe and electric organs, and organ playing.
The PipeChat List Home Page
E-mail list for pipe/digital/electronic organs and related topics. Informal and fun.
The Shrine of St. Cecilia
Reproductions of historic images of St. Cecilia, many with portativs.