ToolsOpen sourceApache-2.0

Zipline Reloaded

Maintained fork of Quantopian's Zipline backtester

By Stefan Jansen

Visit website stefan-jansen/zipline-reloaded

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Live GitHub data · Oct 11, 2026

Stars

1,960

Stars · 7d

+12

Stars · 30d

+32

30d momentum

+1.7%

Forks

332

Open issues

Language

Python

Last push

yesterday

Latest release 3.1.1 on Jul 23, 2025. Repository created Feb 25, 2021.

Cumulative GitHub stars, Aug 8, 2026 to Oct 9, 2026. Source: OSSInsight star history.

What it is

Zipline Reloaded keeps the Quantopian backtesting engine alive on current Python and pandas versions. It is used throughout the Machine Learning for Trading book and remains a solid choice for daily-frequency research.

In the maintainers' words: “Zipline, a Pythonic Algorithmic Trading Library”

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What it is

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