Backtesting Python Packages

vectorbt

The backtesting engine that gives you an unfair advantage. Run thousands of trading ideas before others finish one.

backtrader

Python Backtesting library for trading strategies

backtesting

🔎 📈 🐍 💰 Backtest trading strategies in Python.

lumibot

Backtestable AI trading agents and Python algorithmic trading strategies for stocks, options, crypto, futures, forex, SEC filings, FRED macro data, and real brokers.

wickra

Streaming-first technical indicators with a Rust core and Python, Node.js, WebAssembly, C ABI, .NET, Go, Java, and R bindings. 514 indicators, O(1) per-tick updates, no system dependencies. Drop-in TA-Lib replacement.

pkscreener

A Python-based stock screener for NSE, India. PKScreener is an advanced free stock screener to find potential breakout stocks from NSE and show its possible breakout values. It also helps to find the stocks which are consolidating and may breakout, or the particular chart patterns that you're looking specifically to make your decisions.

qubx

Framework for quantitative strategies development, backtesting and live execution.

vibe-trading-ai

"Vibe-Trading: Your Personal Trading Agent"

optopsy

A nimble options research and backtesting library for Python

hftbacktest

Free, open source, a high frequency trading and market making backtesting and trading bot, which accounts for limit orders, queue positions, and latencies, utilizing full tick data for trades and order books(Level-2 and Level-3), with real-world crypto trading examples for Binance and Bybit

hummingbot

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

lakeapi

Python API for accessing Lake high frequency tick trades & order book data

octobot-backtesting

Library containing the backtesting engine for OctoBot

backtrader-next

Python Backtesting library for trading strategies

pm-hbtbacktest

Free, open source, a high frequency trading and market making backtesting and trading bot, which accounts for limit orders, queue positions, and latencies, utilizing full tick data for trades and order books(Level-2 and Level-3), with real-world crypto trading examples for Binance and Bybit

batter

The backtesting engine for prediction markets. Every run ships a verifiable, reproducible receipt.

nanobook

Rust execution layer for Python trading strategies: deterministic LOB, portfolio backtests, pre-trade risk, and IBKR rebalancing.

flox-py

AI-native framework for building trading systems with polyglot bindings.

invinoveritas

The verification layer for autonomous agents — an independent, capital-aware verdict before an irreversible action (/review), a cryptographically signed proof after, and a public on-chain track record, losses included. Free EdgeProof backtest validation. Underneath: memory, sandboxed execution, marketplace. Pay in sats, USDC (x402), or card.

mostlyrightmd

Local-first Python + TypeScript SDK for public data — one interface for quants, ML pipelines, and AI agents. Adapters ship weather (METAR, ASOS, GHCNh, NWS CLI) + prediction-market settlements (Kalshi, Polymarket) today. SEC filings (EDGAR), Federal Reserve (FRED), court filings, FDA approvals, and equities structured data are next.

bbstrader

Simplified Investment & Trading Toolkit with Python & C++

zvt

modular quant framework.

mostlyrightmd-weather

Local-first Python + TypeScript SDK for public data — one interface for quants, ML pipelines, and AI agents. Adapters ship weather (METAR, ASOS, GHCNh, NWS CLI) + prediction-market settlements (Kalshi, Polymarket) today. SEC filings (EDGAR), Federal Reserve (FRED), court filings, FDA approvals, and equities structured data are next.

pineforge-codegen

PineScript v6 → C++ transpiler (source-available, PolyForm Noncommercial). Targets the pineforge-engine runtime.