formancehq/ledger

Health v2 · maintenance only

Adoption not part of the score

1365 stars · 186 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Formance Ledger is an open-source programmable double-entry core ledger for fintech applications, written in Go and backed by PostgreSQL. It supports atomic multi-posting transactions modeled in the Numscript DSL and can run as a standalone microservice or as part of the Formance Platform.

Use cases

• track user balances in wallets or FBO accounts
• build a digital asset exchange ledger
• record payment flows from acquiring to payout
• manage loan schedules and disbursements
• keep an immutable audit trail of money movement
• self-host a double-entry accounting ledger

When to choose

• you need atomic, double-entry bookkeeping with multi-currency support
• you want a programmable transaction DSL (Numscript) to model financial flows
• you need an append-only, auditable system of record for regulators
• you want to self-host financial infrastructure under an MIT license

When to avoid

• you need pre-built PSP connectors, wallets, or reconciliation modules - those are enterprise-only
• you want a simple bookkeeping UI rather than an API-first ledger service
• you cannot operate PostgreSQL and Kubernetes-based deployments
• you need a general-purpose accounting system like ERP or tax accounting

Facets

service · maturity active

database api-framework http-server workflow-automation analytics fintech databases backend self-hosted apis go self-hosted cli ledger double-entry-accounting numscript fintech money-movement multi-currency postgresql microservice audit-trail docker kubernetes linux

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For agents

markdown · JSON · MCP: product_card(name="formancehq/ledger")