# Kotlin/dataframe

Kotlin DataFrame: typesafe in-memory structured data processing for JVM

Repository: https://github.com/Kotlin/dataframe
Canonical: https://ross.abutalabs.com/products/kotlin-dataframe
Homepage: https://kotlin.github.io/dataframe/home.html
Language: Kotlin
License: Apache-2.0
License Family: permissive
Topics: dataframe, data-science, kotlin, data-analysis
Last push: 2026-08-31T19:16:03+00:00

## Health v2 (maintenance only)
Score: 90/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 100, release rhythm 70, longevity 100
- inputs: {"age_days": 2319, "days_push": 2, "days_rel": 41, "gap_med": 104.0, "n_releases_24m": 7}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1064, forks 83 (observed 2026-09-01T02:13:55.419579+00:00)

## What it is
Kotlin DataFrame is a typesafe in-memory structured data processing library for the JVM, reconciling Kotlin's static typing with dynamic data. It supports hierarchical data, immutable transformation pipelines, and integrates with Kotlin Notebook and REPL environments.

## Use cases
- process csv and  data in kotlin
- analyze tabular data in jupyter notebooks
- filter and transform dataframes with type safety
- convert between data classes and dataframes
- clean and reshape structured data on the jvm

## When to choose
- you work in Kotlin and want pandas-like dataframe operations
- you need type-safe column access and null safety
- you do data analysis in Kotlin Notebook or REPL

## When to avoid
- you need distributed big-data processing beyond memory
- your stack is Python and pandas suffices

## Facets
- artifact type: library
- maturity: active
- function: data-science, etl, csv
- domain: data-science, analytics
- platform: jvm
- tags: dataframe, data-analysis, jupyter, typesafe, kotlin, data-engineering

## Member repositories
- Kotlin/dataframe (main) score 90

## Provenance
- Observed fields: from GitHub, fetched 2026-09-01T02:13:55.419579+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T06:56:38.014519+00:00, confidence not recorded.
  - readme: https://github.com/Kotlin/dataframe (fetched 2026-09-01T02:13:55.419579+00:00, sha addc8813c1d2)
  - homepage: https://kotlin.github.io/dataframe/home.html (fetched 2026-08-29T12:57:51.310640+00:00, sha 7f23ed1b92fe)
- Data as of 2026-08-30T08:39:29.467469+00:00.