A collection of awesome open source fintech projects

From currency converters to invoicing tools, the world of open source fintech is overflowing with interesting projects. We’ve put together a curated list of our favorites and hope you’ll add projects you love too. Please submit a pull request to add new projects to our GitHub repository—this blog post will be updated periodically to stay in sync with the repo.

Table of contents


  • Accrue.js - a loan and interest calculation plugin for jQuery
  • finance - a library for financial calculations in Ruby
  • node-sales-tax - international sales tax calculator for Node
  • py1040 - a U.S. personal income tax calculator


  • amCharts - a simple and flexible drop-in data visualization solution
  • finance-go - a financial markets data library implemented in Go
  • FinTA a technical analysis of financial indicators implemented in Pandas
  • Lightweight Charts - display financial data as an interactive chart on your web page without affecting loading speed and performance
  • perspective - an interactive analytics and data visualization component especially well-suited for large and/or streaming datasets
  • react-financial-charts - charts dedicated to finance with multiple types, interactive indicators, overlays, and drawing objects

Credit card forms

  • Card - a better credit card form in one line of code
  • Payment - a jQuery-free general purpose library for building credit card forms, validating inputs, and formatting numbers


  • fincen - A Go library for reading and writing Fincen BSA forms. It is capable of generating, validating, and batching submissions.
  • OpenSanctions - an open database of international sanctions data, persons of interest, and politically exposed persons
  • Watchman - offers search functions over numerous trade sanction lists from the United States

Currency handling

  • accounting - money and currency formatting for Golang
  • accounting.js - a tiny JavaScript library for number, money, and currency parsing/formatting
  • currency.js - a lightweight library for handling currency values and built to work around floating point issues in JavaScript
  • Dinero.js - an immutable library and API to create, calculate, and format monetary values
  • Open Exchange Rates - a real-time JSON API that provides exchange rates (forex/fx rates) for 150+ currencies, relative to USD


  • CryptoList - curated collection of blockchain and cryptocurrency resources
  • deep-finance - datasets, papers, and books on AI and finance
  • Fintech dictionary - simple definitions of fintech terms and acronyms


  • PaymentFont - a sleek webfont featuring popular payment methods
  • payment-webfont - an SVG webfont full of payment system and ecommerce icons
  • Remix Icon - set of neutral-style system symbols, including but not limited to payment method icons, for designers and developers



  • iso-8583-socket-queue - Node.js powered ISO8583 gateway implementation for banking/fintech POS systems communication
  • JReactive-8583 - ISO8583 client and server built on top of excellent Netty asynchronous messaging framework with the help of j8583 for encoding/decoding
  • moov-io/iso8583 - ISO 8583 message reader and writer in Go
  • moov-io/iso8583-connection - Connection package matching iso8583 requests and replies

Personal finance

  • Budget - a web application that helps you keep track of your finances by organizing and visualizing transactions
  • Firefly III - a self-hosted manager for personal finances to track expenses and income
  • Ghostfolio - a web-based wealth management application to keep track of your financial assets like stocks, ETFs or cryptocurrencies and make solid, data-driven investment decisions
  • Mintable - automate personal finances without ads and data collection
  • OnTrack - a simple, self-hosted budgeting app to understand and control spending without giving banking/financial info to a third party

Stock data

  • GoFinance - Financial information retrieval and munging written in Go
  • google-finance - Python module to get stock data from Google Finance
  • JCStockGraph - display historical price graphs for any stock in your iOS app
  • TuShare - a utility for crawling historical data of China stocks
  • yahoo-finance - Python module to get stock data from Yahoo Finance

Subscriptions and billing

  • BoxBilling - billing, client, and order management software designed to be easy-to-use for both clients and sellers
  • Crater - web and mobile app that helps freelancers and small businesses track expenses/payments and create professional invoices and estimates
  • Invoice Ninja - invoice clients, facilitate payments, track time/tasks, handle expenses, and more (built with Laravel and Flutter)
  • Kill Bill - an SaaS-like subscription management and billing solution with real-time analytics and financial reports
  • Manta - flexible invoicing desktop app with diverse and customizable templates
  • Recurly.js - create subscriptions, process one-time transactions, and update customer billing information


  • ach - a reader, writer, and validator for Automated Clearing House (ACH) files
  • Akaunting - online accounting software designed for small businesses and freelancers
  • Apache Fineract - core banking solution for financial institutions offering services to the world’s two billion underbanked and unbanked
  • fredapi - Python API for FRED (Federal Reserve Economic Data) and ALFRED (Archival FRED)
  • go-finance - Go library containing a collection of financial functions for time value of money (annuities), cash flow, interest rate conversions, bonds, and depreciation calculations
  • Gringotts - a simple and unified API to access dozens of different payment gateways with very different APIs, response schemas, documentation, and jargon
  • Hyperledger Fabric - distributed ledger framework for developing solutions and applications
  • Learn Go with tests - resource for learning test-driven development with Go
  • Omnipay- payment processing library for PHP
  • pyfolio - portfolio and risk analytics in Python
  • rtp-20022 - a project offering Go structures which can read and write XML encoded ISO 20022 messages for RTP payments
  • Sequence - immutable, scalable, and easy to use ledger service
  • XChange - Java library that provides a simple API for interacting with 60+ cryptocurrency exchanges, delivering a consistent interface for trading and accessing market data
Next up
Your guide to the Moov ACH Gateway
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