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Dev tools · July 21, 2021

Numary – An open-source, scriptable financial legder

The programmable open source core ledger for fintech - formancehq/ledger

Numary – An open-source, scriptable financial legder launched on July 21, 2021 with 19 votes, #1,251 of 3,502 launches that month and more than 75% of that year's launches. The site was still online in September 2026, 5 years on.

In plain words

Numary is an open-source financial ledger designed for developers. It provides a scriptable platform for managing complex financial transactions and accounting operations. The tool allows engineers to build custom financial systems with programmability at its core, making it suitable for fintech applications, payment platforms, and companies needing precise ledger functionality. Its open-source nature enables transparency and community contributions.

written from the facts on this page · September 2026

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