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Polars provides an in-memory query engine and DataFrame library for Rust and Python.
Polars develops a DataFrame framework and in-memory query engine for Rust and Python, with parallel execution, cache-efficient algorithms, and an expressive API. Founded in the Netherlands in 2020 by Ritchie Vink, it raised EUR 18 million in Series A funding in September 2025, led by Accel with participation from Bain Capital and individual investors. The funding was intended to expand engineering, improve Polars Cloud, and refine go-to-market efforts.
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