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The startup behind open source tool Polars raises $21M from Accel

Polars, an Amsterdam-based startup, has raised $21M in Series A funding led by Accel to enhance its open-source data processing tool, Polars. Creator Ritchie Vink developed it during COVID-19 to improve upon Pandas. The funding will support features like Polars Cloud and Polars Distributed, aiming to rival Apache Spark and cater to large-scale data processing needs.

Key points

  • Polars is an open-source data processing tool started by Ritchie Vink during COVID-19 due to dissatisfaction with Pandas.
  • The startup raised €18 million ($21M) in Series A funding led by Accel, with participation from Bain Capital and angel investors.
  • Polars Cloud, launched in February, is a managed platform enabling cloud-based query processing.
  • Polars Distributed is currently in public beta and targets usage of petabyte-scale data to compete with Apache Spark.
  • The funding will primarily be directed toward developing Polars Distributed to close the scalability gap between Pandas and larger systems.
  • Polars has surpassed 24 million downloads but aims for sustainable returns through commercial features.

Why it matters

  • The rise of Polars reflects a growing trend in IT towards open-source tools that effectively address data processing challenges.
  • With the data-centric approach, 2025 IT trends highlight the importance of scalable data solutions in various industries such as finance, life sciences, and logistics.
  • The ongoing shift in the tech community emphasizes the increasing competition among data tools, indicating a potential shift in market power from legacy systems like Pandas to newer frameworks.

The success of Polars underlines the potential of innovative open-source projects to disrupt traditional data processing markets, especially by addressing scalability issues that face tools like Pandas.