The developer-first toolkit for building compliant fintechs

Built for developers, trusted by operators—Blnk provides the essential infrastructure to build, scale, and operate compliant fintech products with 100% confidence

Built for developers, trusted by operators—Blnk provides the essential infrastructure to build, scale, and operate compliant fintech products with confidence

Start building with Blnk

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Product screenshot of Blnk Cloud showing the transactions page and a summary detail pane on the right.

MULTICURRENCY WALLETS

TRANSACTIONS

IDENTITIES

Build your financial ledger and system of record

Build your financial infrastructure on an immutable, open-source ledger. Every transaction, balance, and identity recorded with complete traceability.

Image showing Blnk tracking money movement between two multi-currency balances with identity management.

ANOMALY DETECTION

Flag, investigate & resolve anomalies in real-time

Get real-time alerts on anomalies across your financial data, with instant detection of suspicious transactions, unusual balances, and high-risk activities.

RECONCILIATION

Auto reconcile your ledger with external records

Match your system of record against external records for faster reconciliation. Handle high transaction volumes while maintaining complete accuracy.

COLLABORATION & ACCESS CONTROL

Run back-office operations & work with your team in one place

Invite team members easily and control exactly what they can access. Set permissions, track activities, and collaborate securely in one workspace.

Used by companies of different sizes

Blnk is the best solution that I have found until now. The other choices are a bit too complex to use and do too much. Blnk does the job that a ledger needs to do without complexity.

Antonio Roberto Silva,
Founder/CTO

Given the fact that Blnk is open-source, with support for managed cloud environment, you have solved 70% of our engineering problems, and I see it getting close to 100%.

Mohammed Al-Ameen,
Head of Engineering

Blnk simplifies ledgers and money movement without unnecessary complexity. Integration was seamless, and the fact that it's open-source adds flexibility. On top of that, Blnk is incredibly fast, making it a solid choice for high-performance financial systems.

Toni Akinmolayan,
Senior Software Engineer

The onboarding was seamless with the team's exceptional guidance—the level of attention and dedication was truly exceptional. The support we got has been outstanding, and we couldn't ask for better partners. Highly recommend!

Sajith Caldera,
CEO/Co-founder

OUR CORE

At our core, Blnk is open-source

At Blnk, open-source is the foundation of everything we do. Our vision for financial products is to build collaborative tools that drive innovation, transparency, and accessibility.

Read our story

Modular by design;
built for speed.

Scale your fintech product with ease. Enjoy a specialised, flexible backend that adapts quickly to your needs while ensuring fast performance.

Blnk 3D image: Collaboration at its core

Collaboration at the core.

Blnk unites developers, operators, and stakeholders in seamless collaboration, providing everyone with the tools to power your organisation’s growth.

Enterprise-grade security.

Your data is secure with world-class, industry-leading security measures. We adhere to ISO-27001, PCI-DSS, and GDPR standards.

Customer stories

Managing settlements for a crypto multi-currency wallet

Implementing closed-loop loyalty points systems for customers.

Using Blnk to offer wallets infrastructure in our BaaS suite.

Expanding our payment products into crypto banking with Blnk.

Questions & answers

How does Blnk handle security?

We maintain ISO-27001, SOC 2, and GDPR compliance while implementing industry-leading security measures across all operations. Your data's protection is our highest priority.

What features does the open-source Core include?

Our open-source Core consists of three key modules: robust ledger infrastructure for multicurrency wallets & transaction workflows, identity management, and a reconciliation engine.

How quickly can I get started?

Sign up for Cloud, install our open-source Core, and follow our developer documentation to start building in minutes. Our support docs help you set up your Cloud workspace as well.

Can Blnk adapt to my organisation's needs?

Blnk's modular open-source Core lets you build any financial product or architecture you need. Whether you're developing lending, banking, payments, or custom solutions, our platform adapts to your requirements.

How do you ensure financial data accuracy?

Blnk implements double-entry accounting principles with immutable transaction records, ensuring data integrity and reliable audit trails for all financial activity.

What payment integrations are available?

Blnk doesn't include pre-built payment or bank integrations. However, our flexible ledger infrastructure lets you build your own custom integrations for any service—from payment processors to banking systems.

Is Blnk free to use?

Blnk combines a free, open-source Core backend (Apache License 2.0) with a premium Cloud platform. The Core backend is freely customizable for commercial use. View our pricing page for more details.

How active is the Blnk developer community?

Our open-source Core is actively supported by a growing community hosted on Discord, where developers collaborate to build and improve the codebase. Join here to share ideas, get help, and contribute.

Can I use Cloud without the open-source Core?

No. The Core backend is required for all Cloud workspaces to ensure full functionality.

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The developer-first toolkit for building compliant fintechs

The developer-first toolkit for building compliant fintechs

Build your financial ledger and system of record

Flag, investigate & resolve anomalies in real-time

Auto reconcile your ledger with external records