Reliable tools for your financial product.

Lightweight developer tools for building and managing financial products to standard and at scale.
Trusted by companies to build and operate their core financial backend:
The Blnk Ledger
Advanced open-source financial backend for recording and tracing all transaction operations happening in your application.
Blnk Cloud
Deploy instances, see real-time insights detect transaction anomalies, and reconcile your transactions
Blnk Plugins
Extend the functionality of your ledger by building your own custom plugins or installing from our plugin directory.
The Blnk Ledger

Open-source ledger database for recording financial transactions.

An immutable, scalable, double-entry ledger that tracks the movement and store of value to and from user accounts/balances.
A screenshot of the Blnk Cloud showing all of the ledgers created in the organization
Ledgers
Ledgers provide a simple and straightforward way of grouping your balances and navigating your financial database.
Ledger balances
Ledger balances represent the store of value in your application. You can use them to model wallets, accounts, card balances, etc.
Transactions
Enjoy accurate and precise accounting of all your transactions between balance with the double-entry principle.
Balance monitors
Keep an eye on the amounts being held by your balances, and get notified when your set conditions are met.
Blnk for Organizations

Stay on top of everything happening in your organization.

A lot of things depend on how well your ledger is managed. Blnk provides with your financial operational functionality to keep you informed and enhance your organization’s efficiency.
A screenshot of the Blnk Cloud showing a list of all ledger balances created in the organization with a detail pane from the left.
Advanced reports
Generate detailed reports from all transactions and balances happening in your ledger.
Forecast & smart insights
Leverage machine learning and AI to predict events and financial health based on your transaction data.
Anomaly detection
Get instantly notified when something is goes wrong in your ledger. Stay ahead of potential fraud cases in your application.
Reconciliation
Simply your reconciliation processes and ensure all of your transactions are up to date with your external statements.
Advanced transaction features

Model complex money movement flows

Represent any money movement case scenario on your Blnk Ledger, ensuring an accurate and reliable system of record.
Refunds and scheduling
Easily process refunds for an earlier transaction, or schedule a transaction to process at a later date.
Handling overdrafts
Implement overdrafts on your ledger, allowing you to hold negative balances where required.
Applying inflight
Apply conditions to a transaction workflow, ensuring that the transaction isn’t process until the defined conditions are met.
Multi-currency transactions
Initiate and accurately track transactions between balance of different currencies/asset classes.
Anomaly Detection

Detect when things go wrong in your transactions.

Anomaly detection helps you identify unusual patterns or behaviours in your financial data that deviate from the norm, allowing you to take proactive steps to resolve it.
A screenshot of the Blnk Cloud showing 3 anomalies detected on a ledger via a notification on the side navigation
Real-time monitoring
Continuous surveillance of transactions to detect irregularities as they occur.
Pattern recognition
Leveraging AI and machine learning to identify patterns and trends that differentiate between normal and anomalous activities.
Alerts & notifications
Immediate alerts for any detected anomalies, enabling quick response and mitigation.
Quick resolution
Built on top of the Blnk Ledger, you can quickly find the source of the anomaly in seconds and set rules to resolve it in time.
Blnk for Organizations

Control data access and collaborate with your team

Easily set permissions and work with other departments like reconciliation, customer service, compliance, etc. in your organization to inspect and manage your financial data.
A screenshot of the Blnk Cloud showing the manage teammates setting for handling data access controls and permissions
Invite teammates
Share invites with the rest of company, and collaborate real-time on your financial data.
Control access to your ledger data
Manage how people access and interact with your ledger data via access controls and permissions.
Blnk for Developers

Let’s handle your money database, focus on the rest!

An open-source, developer-friendly backend that helps developers reduce the risks of error while building financial apps.
A code snippet showing a sample transaction being recorded with the Blnk ledger
Open-source code
Inspect the code up close. Join other developers around the world to contribute and improve the product.
Active community
Join and share ideas with our Discord community of developers also building financial apps.
Blnk CLI tool
Use our CLI tool to improve your development workflow, and implement advanced Blnk features.
Custom plugins
Build and publish custom plugins that extends and improves the capability of your Blnk Ledger.
Blnk Plugins

Supercharge your ledger with Blnk Plugins.

Unlock new possibilities and tailor your Blnk Ledger to meet your unique needs. Build, publish, and integrate custom plugins that enhance the functionality and performance of your financial applications.
Open-source directory
Discover and install features from a diverse collection of plugins developed and continuously updated by other developers.
Build your own plugins
Contribute to a growing ecosystem of tools and features that extend the power of Blnk Ledger.
Private plugins
Create and deploy your own internal plugins to seamlessly fit your workflows and achieve optimal efficiency.
Join our Discord community.
Want to learn about fintech best practices? Come chat with professionals and experts from around the world, learning and sharing for free.
Join Discord
We are open-source.
Download and own your ledger infrastructure with our open-source ledger. Our ledger is constantly being improved and battle-tested by our community.
Go to Github

Building a fintech product? We should talk.

We would love to know what you are building.