# nowthis/sankeymatic

Make Beautiful Flow Diagrams

Repository: https://github.com/nowthis/sankeymatic
Canonical: https://ross.abutalabs.com/products/sankeymatic
Homepage: http://sankeymatic.com/build/
Language: JavaScript
License: ISC
License Family: permissive
Topics: sankey-diagram, data-visualization, diagram-generator, svg
Last push: 2026-07-13T03:58:27+00:00

## Health v2 (maintenance only)
Score: 74/100 (v2, computed 2026-09-03T02:39:23.370411+00:00)
- activity 92, release rhythm 35, longevity 100
- inputs: {"age_days": 4024, "days_push": 51, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1416, forks 182 (observed 2026-08-28T04:04:39.900769+00:00)

## What it is
SankeyMATIC is a free, browser-based Sankey diagram builder that lets users describe flows as plain text and customize the diagram's appearance interactively. It exports finished diagrams as PNG images or SVG code and saves work in progress as readable plain-text files, with all processing done locally in the browser.

## Use cases
- create sankey flow diagrams from text input
- visualize budget or financial flows as a sankey diagram
- export a sankey diagram as svg or png
- build flow diagrams without coding
- make energy or money flow diagrams in the browser
- save and diff diagram definitions as plain text

## When to choose
- you need polished Sankey diagrams quickly with zero coding
- you want a free, private tool that runs entirely in your browser
- you need SVG/PNG export for reports or presentations

## When to avoid
- you need programmatic or automated diagram generation in a build pipeline
- you need diagram types beyond Sankey flows
- you need a server-side or CLI rendering solution

## Facets
- artifact type: application
- maturity: active
- function: data-visualization, charts
- domain: data-visualization, web-development
- platform: browser
- tags: sankey-diagram, svg-export, png-export, diagram-generator, no-code, d3, web-server

## Member repositories
- nowthis/sankeymatic (main) score 74

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:39.900769+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T04:38:06.525114+00:00, confidence not recorded.
  - readme: https://github.com/nowthis/sankeymatic (fetched 2026-08-28T04:04:39.900769+00:00, sha 65f31d45c09e)
  - homepage: http://sankeymatic.com/build/ (fetched 2026-08-29T11:51:05.297957+00:00, sha b2a1919daa17)
  - site_page: https://sankeymatic.com/about (fetched 2026-08-29T11:51:05.300916+00:00, sha e931c032c8b7)
- Data as of 2026-08-30T08:39:29.467469+00:00.