Simple Python script which can be bound to a key and cycles through viewports. Comes in Python or MEL.
https://drive.google.com/drive/folders/1HOiryNvYbfr0rjIvNq0EQ-QjUrWQPsvZ?usp=sharing
Simple Python script which can be bound to a key and cycles through viewports.
Comes in Python or MEL.
Link in the description.
Will ignore perspective views and has some commented code for just flipping to reverse views.