Switching from another tool?

We built importers first, marketing second. Whatever you use today, your work opens in OpenSankey — here is an honest comparison for each.

The reference freeware for substance flow analysis, last released in 2022. Open your .smfa and .zmfa models directly in your browser.

The commercial desktop standard for industry. We differ on three things: browser, public pricing, and a true reconciliation engine.

The beloved free web generator. Paste your diagram text as-is — then add interactivity, hierarchy and data that SankeyMATIC can't.