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Formance Ledger

Programmable double-entry financial ledger service

Budgeting & Finance ★ 1.4k stars Medium setup MIT

Formance Ledger is an open-source programmable financial ledger written in Go. It records money movements as immutable double-entry transactions scripted with its Numscript language, and provides an API for building fintech and payment applications.

Official siteSource code

Key features

  • Programmable money ledger
  • Immutable transactions
  • Double-entry model
  • Developer API

Strengths

  • Released under the MIT license
  • First-class Docker support for quick deployment
  • Kubernetes-ready with Helm charts available
  • Active community (1.4k GitHub stars)

Is Formance Ledger secure?

OSV.dev has no published security advisories for Formance Ledger's repository. No known vulnerabilities is not proof of security: it means none have been publicly catalogued.

Source: OSV.dev, checked 2026-10-14. How this is measured.

Formance Ledger replaces

Self-hosted Modern Treasury alternativesSelf-hosted Stripe Ledger alternatives

Health badge

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SelfHostIndex: 84 · excellent

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