The G Dorian scale has 7 notes: G – A – B♭ – C – D – E – F. Dorian is a minor scale with a bright major 6th. That one note lifts the sadness of the natural minor and gives a cool, soulful sound: the scale of funk vamps, Santana solos and modal jazz. In Indian music it is Kafi thaat.
Compared with the G major scale it has ♭3 (B♭ instead of B), ♭7 (F instead of F♯).
The explorer above is set to G Dorian: the whole neck is mapped, and you can zoom into any of its 7 positions, change the labels to degrees or fingers, and hear it up, down and in patterns.