Association of Blind Piano Tuners
- Serves blind and partially sighted piano tuners worldwide. Site provides information including mission statement, aims, member list and membership benefits.
- http://www.uk-piano.org/

Equal Temperament Pitch/Frequency Chart
- A keyboard based pitch to frequency chart provided by McNeil Johnston Orchestrations.
- http://www.cis.hut.fi/Opinnot/T-61.140/Vinkit/hertz.html

The Australasian Piano Tuners and Technicians Association (APTTA)
- Consists of branch associations in WA, SA, Vic, NSW, QLD and New Zealand with a combined membership of over 300 piano technicians. Conventions are held every two years.
- http://www.aptta.org.au/

Piano Technician Homepage
- Discusses piano maintenance, purchasing, pricing and general questions. Includes MP3 piano music files by the webmaster.
- http://www.pianotechnician.com

Master Piano Technicians
- Provides information including mission statement of the organization, history, events, contact details, and member pages.
- http://home.global.co.za/~piano/mpt/