nautilus_trader

What it is

An open-source, production-grade trading engine built around a Rust core, with Python serving as the control plane for strategy logic, configuration, and orchestration. It spans research, deterministic simulation, and live execution in a single event-driven architecture, and the same strategy and execution-algorithm code can run across backtest and live systems. Multi-asset and multi-venue by design, it integrates any REST API or WebSocket feed through modular adapters, covering crypto exchanges, FX, equities, futures, options, and betting exchanges. Traders who want compiled-engine performance with Python flexibility will find it suitable, though live execution involves venue, transport, timing, and reconciliation behavior that a simulation may not reproduce.