Join waitlist
Back to products
Blnk Finance

Blnk Finance

Open-source financial core for building fintech products

Website blnkfinance.com
Overview

What it is

Blnk Finance is an open-source financial core for developers who want to ship fast without compromising compliance and correctness. 📂 It is open-source and free to use. 👨🏽‍💻 Great developer experience and easy to understand. 👾 Language-agnostic. Can be integrated into any infrastructure.

Intent

I need it when

Manage multi-currency balances and complex transaction workflows like split payments, bulk transfers, and two-phase commits

Blnk Core supports multi-currency balance tracking, reconciliation, and custom transaction workflows. Developers define money movement logic via APIs, and Blnk handles ledger consistency and integrity automatically.

Monitor financial transactions for fraud and anomalies in real-time with rule-based detection

Blnk Watch provides rule-based transaction monitoring with simple, human-readable scripts. Teams can define aggregate and time-based checks, manage rules in GitHub with version control, and flag risky activity before it escalates.

Build a fintech product with accurate money movement and transaction handling without building a ledger from scratch

Blnk provides an open-source, immutable ledger with double-entry accounting that developers can integrate via REST APIs and SDKs. This eliminates months of custom ledger development and ensures transaction accuracy and compliance from day one.

Plan and visualize fund flows across accounts, wallets, and payment providers before implementation

Blnk Maps allows teams to sketch, simulate, and share money movement designs on a visual canvas. Product, finance, and engineering teams can collaborate on a single source of truth before writing code.

Operate and collaborate on ledger management with non-technical team members in a production environment

Blnk Cloud provides a back-office dashboard for ledger operations, access control, audit logs, and team collaboration. Non-technical staff can manage transactions, approvals, and reconciliation without direct database access.

Drop

Not a fit when

  • User needs a fully managed, no-code financial platform without API integration or developer involvement
  • Organization requires on-premise deployment with zero cloud connectivity or external dependencies
  • User seeks a simple accounting or bookkeeping tool for small business operations without custom transaction workflows
  • Project requires immediate production deployment without technical infrastructure setup or database management
  • Team lacks software engineering expertise to integrate APIs, manage PostgreSQL databases, or deploy ledger systems
Commercials

Pricing

Freemium with tiered Cloud plans. Open-source Core is free forever. Starter Cloud plan at $100/month or $1,080/year. Production plan requires custom quote. View pricing