Repair Tools and Materials
Ferree’s Tools
Votaw Tool Company
J. L. Smith Company
Allied Supply
NAPBIRT Online Store – I highly recommend the “Complete Woodwind Repair Manual” by Reg Thorpe here.
MSC Direct
Especially good for the amateur/beginning repairer.
Ed Myers
Prestini USA
Boehm Tools 


Education & Information – one of the most comprehensive saxophone history sites on the web – no longer updated, owned by USAhorn.
Pete Hales Blog – the man formerly known as saxpics has a new blog, and its full of good stuff.
CyberSax Q&A – hasn’t been updated in a long time, but lots of great sax info here if you take the time to read through.
Bassic Sax – A saxophone site with lots of cool information and links to other helpful sites.
Steven Howard – Saxophone repair and information site run by Steven Howard out of the U.K.
Mouthpiece Museum – Information and galleries for vintage saxophone mouthpieces.
The Martin Story – Exhaustive history of Martin saxophones.
The HN White Page – History of the H.N. White (King) musical instrument company, makers of King saxophones.
Jay Easton’s Sax Family Album – Pictures and sound clips of many different shapes and sizes of saxophone, including original Adolphe Sax instruments.  Just listen to the beauty of the Adolphe bass sax, beating the pants off of a modern Selmer even though the Adolphe was in bad shape gathering dust in a museum!
Theo Wanne Mouthpiece Knowledge: Lots of really good mouthpiece stuff here by Theo Wanne, a mouthpiece maker and (former?) refacer.
M. Postma Sax Page:  Don’t know much about this site except it seems to have tons of neat-o stuff all over it that isn’t found anywhere else, like saxophone bore comparisons.
UNSW Saxophone Acoustics Page:  University of New South Wales introduction to saxophone acoustics page.
Van Cott Information Services – Some hard-to-find saxophone books here.


Forums (Grain-Of-Salt-Dept.)

Both of these seem to be much less active than they were 5 years ago, probably thanks to the walled garden of continually splitting and re-aligning Facebook forums.  But you can still use the search functions on these sites to find that someone probably had something to say about whatever you want to learn at some point in the past, and amongst the chaff you occasionally find some really great information.  

Saxontheweb – largest saxophone forum on the web.  
Woodwind Forum
 – a more recent forum for all woodwinds.