C++ DataFrame

Judgement

What it is

Building block

What it does

A C++ library for in-memory tabular data with joins, group-by, pivots and a large set of statistical, financial and machine learning algorithms.

Adopt it when

You do data analysis or trading research inside a C++ system and want pandas-like operations without Python.

Watch out

It is essentially a single-author project, and its heavy template use means long compile times and hard error messages.

Ready for

Usable

Runs as

Library

Built with

C++

How established

Established: started 9 years ago, latest release 4.2.0.

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: C++ DataFrame → LLVM project → runs on a microchip

How compilers were built, back to punched paper tape

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