Finance GitHub Repositories (2026) · Open Source Tools

Self-hosted Subscription Tracker

Open Source Wealth Management Software. Angular + NestJS + Prisma + Nx + TypeScript 🤍

Modern plain text accounting. Beancount compatible.

An unofficial Rust client for the Interactive Brokers TWS API. Async and blocking, for TWS and IB Gateway.

Atom Agent, Open-Source Governed AI Agent Platform for Self-Hosted Automation

A simple but powerful self-hosted finance tracker

Open-source C++17 engine for backtesting and forward execution, with a versioned C ABI; Pine Script v6 runs through code generation. Against TradingView's own trade lists, all 7,989 graded probes (309 open-corpus strategies, 741 closed-test scripts) grade excellent or strong: 7,983 excellent, 6 strong. Apache-2.0.

Data Apps & Dashboards for Python. No JavaScript Required.

ezBookkeeping is an open source, powerful, self-hosted personal finance app that is easy to use.

A Python Finance Library that focuses on the pricing and risk-management of Financial Derivatives, including fixed-income, equity, FX and credit derivatives.

AI-native CLI for the Longbridge trading platform with real-time market data, portfolio, and trading...

POS open-source, simple things only need simple solutions

Intuitive Data Workflows

QLNet C# Library

MCP Server for use with Monarch Money

A stock backtesting engine written in Java. And a pairs trading (cointegration) strategy implementation using a bayesian kalman filter model

Fast FIX protocol library for the JVM

💰 Double-entry bookkeeping made easy — plain-text accounting for humans and AI agents. Polished iOS & Android app built with React Native + Expo.

Go Money is a opensource personal finances manager

Largest C# stock indicator library with over 750 to choose from and easiest to use with abilities such as making an indicator out of any other indicator or using any moving average with any indicator.