Top 30 Open‑Source Financial Services Software

A robust core banking platform that provides APIs for loan, savings, and client management, ideal for building digital financial services.

An extensible, open‑source financial services platform offering loan, savings, and client management with a rich API ecosystem.

API‑first, open‑source banking platform that enables rapid creation of banking services with strong security and compliance features.

Self‑hosted personal finance manager with multi‑currency support, budgeting, and transaction import/export – great for fintech prototypes.

Full‑featured open‑source ERP with integrated accounting, invoicing, and payments modules, suitable for fintech SaaS products.

Modular open‑source ERP offering accounting, invoicing, and payment integration; highly customizable via Python modules.

All‑in‑one open‑source ERP/CRM with accounting, invoicing, and payment gateway connectors, perfect for early‑stage fintechs.

Open‑source accounting and ERP system focused on small‑to‑mid‑size businesses, offering double‑entry bookkeeping and multi‑currency.

Cross‑platform personal finance manager with budgeting, reporting, and import/export capabilities.

Desktop accounting software with double‑entry bookkeeping, scheduled transactions, and robust reporting.

Open‑source platform for interoperable payments, enabling low‑cost, instant digital financial services across ecosystems.

Reference implementation of the Stellar network, providing a decentralized, low‑fee payment infrastructure.

Permissioned blockchain framework for building modular, scalable financial applications with private transactions.

Ethereum client designed for enterprise use, supporting both public and private networks with robust permissioning.

Distributed ledger platform tailored for financial institutions, offering privacy‑preserving smart contracts.

Open‑source server implementation of the XRP Ledger, enabling fast, low‑cost cross‑border payments.

Comprehensive open‑source library for quantitative finance, covering pricing, risk, and analytics.

Pythonic algorithmic trading library for backtesting and live trading, used by quant researchers.

Feature‑rich Python framework for strategy development, backtesting, and live trading.

Simple yet powerful Python library for backtesting and executing algorithmic trading strategies.

Open‑source KYC platform providing identity verification workflows, document management, and API integration.

Community‑driven AML screening engine with rule‑based transaction monitoring and reporting.

Lightweight workflow and decision automation platform, ideal for orchestrating complex financial processes.

Distributed streaming platform used for real‑time transaction processing, event sourcing, and data pipelines.

High‑performance stream processing engine for real‑time analytics on financial data streams.

Open‑source risk analytics framework offering market, credit, and operational risk calculations.

Quantitative risk modeling library focused on portfolio risk metrics and stress testing.

Static analysis tool for Ethereum smart contracts, detecting security vulnerabilities before deployment.

Reference implementations and tutorials for building chaincode (smart contracts) on Hyperledger Fabric.

Scalable, open‑source API gateway for managing, securing, and monitoring fintech microservices.

Identity and access management solution offering SSO, MFA, and user federation—essential for fintech authentication.

Modern data exploration and visualization platform for building dashboards and reports on financial data.

Open‑source business intelligence tool that lets fintech teams create queries, visualizations, and alerts without code.