Polars is also a wonderful project!
Polars is a DataFrame interface on top of an OLAP Query Engine implemented in Rust using Apache Arrow Columnar Format as the memory model.
https://github.com/pola-rs/polars/blob/main/README.md
https://ibis-project.org
most data engines and dataframe tools these days use Apache Arrow, it's a bit orthogonal
Polars is also a wonderful project!