Observed arrival · 2026-09-12
FastSankey Draws Sankey Diagrams Like Engineering Plans
A browser-based Sankey diagram maker for energy, material, and money flows, with drawing sheets and print-ready exports.
○Open
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$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
Field notes
The editor models flows as typed entries with units and colors, then turns those entries into arrows whose widths reflect their values. Nodes snap to a grid, merged flows add their widths, circular return paths route around the diagram, and imbalanced nodes receive a red delta warning. Output is organized around A4–A1 landscape sheets, including a 4 mm frame, editable title block, legend, and exports in PDF, SVG, and up-to-4× PNG.
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Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
One card from the complete issue