Figma - Team-based interface design, Figma lets you collaborate on designs in real time.

Sankey Diagram (csaladen) - Sankey Diagram Generator

GEES - GEES is an all-in-one AI design platform that is shaping a future where you can brainstorm, design, hand-off in one file — without changing any other tools.

Sankey Diagram - Professional drawing tool to create Sankey Diagrams.

Sketch - Professional digital design for Mac.

SankeyMATIC - There are no tools to install. There is no code to write. You do not have to sign up for anything. Just enter your data, customize the diagram to your liking, and download a finished product.