Harmonix
- Manufacturers and designers of the first production electric harmonica.
- http://www.harmsol.co.uk/

Neil Graham :Custom Harmonicas
- Custom made professional Harmonicas. Highly responsive modified Marine bands featuring radical reed modifications and improved air flow. As played by Australia's Jim Conway.
- http://www.neilgraham.com.au/

CustomHarmonicas.Com
- Customized diatonic harmonicas made by Joe Filisko, Richard Sleigh, and James Gordon, using the "Filisko Method" of upgrading harmonicas.
- http://customharmonicas.com/

William C. Romel
- Custom crafted instruments. Las Vegas, Nevada, United States.
- http://home.earthlink.net/~romel/

Super Harmonica Site
- Mark Lavoie produces custom harmonicas using laser cut titanium and vermont maple wood harmonica combs. Bristol, Vermont, United States.
- http://www.middlebury.net/lavoie/

Lee Oskar Harmonicas
- Product information, and distributer list. Located in Washington, United States.
- http://www.leeoskar.com/