Just a few links.
- Melodeon.net - melodeon discussion forum.
- Chiff and fipple - tin whistle discussion forum.
- The big whistle - A shop with lots of whistles.
- Impempe whistles - From South Africa, made by Ian Turnbull. I play one of these and thoroughly endorse them.
- Generation whistles - Made by a small company in Oswestry, Shropshire, known around the world and iconic in folk and traditional music. Great affordable instruments that I’ve played for decades.