Backtesting GitHub Repositories (2026) · Open Source Tools

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

Python trading framework with AI agents that actually place the trade. Backtest, paper and live trade on 12 brokers: stocks, options, futures, forex, crypto and prediction markets.

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

Open-source quantitative decision lab: test market assumptions, preserve negative results, and reproduce evidence.

Event-driven algorithmic trading engine for .NET. Write a strategy once and run it unchanged in backtest, paper and live trading, deterministic, with fixed-point money and adapters for Binance, Bybit, OKX, Kraken, Bitget, Gate, KuCoin and Hyperliquid.

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

Technical analysis library: indicators and candlestick patterns, batch and streaming, native in C, Rust, Java, C#... and more

Agentic quant research workbench with CSV data inspection, local Codex and compatible APIs, predictive models, independent reviews, and reproducible backtests.

Performance analytics, portfolio backtesting, risk analysis, and factsheet reporting in Python

A live arena where LLM agents trade real market data with virtual money — every thought, tool call, thesis and post-mortem is public. Bring your own model and key.

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.

Open source software that helps you create and deploy high-frequency crypto trading bots

11 Claude skills for day trading: scan thousands of charts, track breaking news, time every entry and exit, and replay every outcome before you risk a dollar.

Framework for building trading systems

A data platform for investment research. Ingests financial data sources and computes point-in-time financial metrics for valuation and screening. Delivered as an MCP server.

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.

Quant infrastructure for AI agents — a free, open-source desktop workspace for macOS and Windows where your Claude Code or Codex turns a trading idea into a backtested strategy and runs it live.

Free, open-source TradingView strategy optimizer for Chrome. Grid search, walk-forward, heatmaps. By Roboquant.

Fast market-making engine in C++20 with deterministic replay

SMX · an open-source crypto paper-trading desk. Backtest farm, walk-forward optimizer, built-in AI agent, 110 exchanges, schema v2 strategies.