Tablesaw

Judgement

What it is

Building block

What it does

A Java DataFrame library for loading, cleaning, transforming and summarising tabular data, with charts through a Plotly wrapper.

Adopt it when

You work with tabular data inside a Java application and do not want to bring in Python or Spark.

Watch out

It is still pre-1.0 after years, and maintenance is light.

Ready for

Usable

Runs as

Library

Built with

Java and Plotly

How established

Established: started 11 years ago, latest release v0.44.4.

What the license allows

You can build it into a product you sell, as long as you keep its copyright notice.

Judged on 2026-11-06 from the project's README and GitHub data. The license and age lines are worked out directly.

Built from

Follow it down: Tablesaw → JDK → LLVM project → runs on a microchip

How compilers were built, back to punched paper tape

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