Ecosystem
Introduction
On this page you can find a non-exhaustive list of libraries and tools that support Polars. As the
data ecosystem is evolving fast, more libraries will likely support Polars in the future. One of the
main drivers is that Polars makes adheres its memory layout to the Apache Arrow spec.
Table of contents:
Apache Arrow
Apache Arrow enables zero-copy reads of data within the same process, meaning that data can be directly accessed in its in-memory format without the need for copying or serialisation. This enhances performance when integrating with different tools using Apache Arrow. Polars is compatible with a wide range of libraries that also make use of Apache Arrow, like Pandas and DuckDB.
Data visualisation
See the dedicated visualization section.
IO
Delta Lake
The Delta Lake project aims to unlock the power of the Deltalake for as many users and projects as possible by providing native low-level APIs aimed at developers and integrators, as well as a high-level operations API that lets you query, inspect, and operate your Delta Lake with ease.
Read how to use Delta Lake with Polars at Delta Lake.
Machine Learning
Scikit Learn
Since Scikit Learn 1.4, all transformers support Polars output. See the change log for more details.
Other
DuckDB
DuckDB is a high-performance analytical database system. It is designed to be fast, reliable, portable, and easy to use. DuckDB provides a rich SQL dialect, with support far beyond basic SQL. DuckDB supports arbitrary and nested correlated subqueries, window functions, collations, complex types (arrays, structs), and more. Read about integration with Polars on the DuckDB website.
Great Tables
With Great Tables anyone can make wonderful-looking tables in Python. Here is a blog post on how to use Great Tables with Polars.
LanceDB
LanceDB is a developer-friendly, serverless vector database for AI applications. They have added a direct integration with Polars. LanceDB can ingest Polars dataframes, return results as polars dataframes, and export the entire table as a polars lazyframe. You can find a quick tutorial in their blog LanceDB + Polars
Mage
Mage is an open-source data pipeline tool for transforming and integrating data. Learn about integration between Polars and Mage at docs.mage.ai.
marimo
marimo is a reactive notebook for Python and SQL that models notebooks as dataflow graphs. It offers built-in support for Polars, allowing seamless integration of Polars dataframes in an interactive, reactive environment - such as displaying rich Polars tables, no-code transformations of Polars dataframes, or selecting points on a Polars-backed reactive chart.