Finance GitHub Repositories (2026) · Open Source Tools

TradingAgents: Multi-Agents LLM Financial Trading Framework

Open source, composable payments platform | PCI compliant | SaaS and Self-host options | Enables connectivity to multiple payment, payout, fraud, vault and tokenization providers | Uplifts authorization with intelligent routing and revenue recovery | Reduce payment processing costs with cost observability | Reduces payment ops with reconciliation

Finathink — Financial Research Optimizer for auditable, point-in-time research, mathematical learning, and constrained portfolio analysis.

Firefly III: a personal finances manager

Wallos: Open-source, self-hostable personal subscription tracker. Visualize your recurring expenses, manage your budget, and save money.

An open-source, high-performance quantitative trading framework in C++/Python focused on strategy analysis and backtesting Trading model R&D · Ultra-fast engine · Efficient backtesting

A local-first personal finance app

Transparent and Efficient Financial Analysis

CANSLIM & Minervini stock screener for 12 markets (US, China, HK, Japan, India, Korea, Taiwan & more). 80+ filters, StockBee-style breadth, group rankings, theme discovery and an AI research chatbot. Free daily static site + MCP server.

Fast, extensible financial charts for the web. The open-source core of Vela by LuxAlgo.

Real-time intraday stock scanner for US equities with a browser dashboard you lay out yourself

Lean Algorithmic Trading Engine by QuantConnect (Python, C#)

Native Android client for Actual Budget, with standalone offline support.

Finance terminal, in your terminal.

Open-source personal finance app with an AI financial advisor: track your net worth, investments, ETFs, cash and debts on your own computer.

Free, open source trading terminal. Agentic IDE for Python strategies and backtests. LSE market data integrated; connects to other data providers and brokers.

Stock market MCP server for Yahoo Finance data, technical analysis, portfolio tracking, and Python backtesting. Runs locally with no API key for core tools.

Portfolio Optimization in Python

Apache Fineract

Open source analytics and market risk library from OpenGamma