# jupyterlab-contrib/jupyterlab-variableInspector

Variable Inspector extension for Jupyterlab

Repository: https://github.com/jupyterlab-contrib/jupyterlab-variableInspector
Canonical: https://ross.abutalabs.com/products/jupyterlab-variableinspector
Language: TypeScript
License: BSD-3-Clause
License Family: permissive
Topics: jupyterlab-extension, jupyterlab, jupyterlab-variableinspector, variable-inspector
Last push: 2026-04-17T17:30:53+00:00

## Health v2 (maintenance only)
Score: 69/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 77, release rhythm 40, longevity 100
- inputs: {"age_days": 3003, "days_push": 138, "days_rel": 727, "gap_med": 2, "n_releases_24m": 2}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1168, forks 100 (observed 2026-08-28T04:03:50.793196+00:00)

## What it is
A JupyterLab extension that displays currently used variables and their values from running kernels in a side panel. It supports notebooks and consoles, with datagrid inspection of matrices and interactive viewing of Jupyter Widgets.

## Use cases
- inspect variables in jupyterlab like in spyder or rstudio
- view dataframe contents while running a notebook
- debug variable values in a jupyter kernel
- browse matrices in a datagrid viewer
- inspect ipywidgets interactively
- see variable values for R or scala kernels

## When to choose
- you work in JupyterLab and want an IDE-style variable explorer
- you need to inspect pandas/numpy objects, tensors, or ipywidgets inline
- you use Python, R, or Scala (almond) kernels

## When to avoid
- you need to inspect very large dataframes or matrices, since content is sent to the browser and can slow it down or consume lots of memory
- you use Jupyter Notebook (classic) rather than JupyterLab >= 3.0
- you need kernels other than Python, R, or Scala

## Facets
- artifact type: plugin
- maturity: active
- function: developer-tools, data-science, data-visualization
- domain: data-science, developer-tools
- platform: python, browser, cross-platform
- tags: jupyterlab-extension, variable-inspector, notebooks, python, r, scala, ipywidgets, web-server

## Member repositories
- jupyterlab-contrib/jupyterlab-variableInspector (main) score 69

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:50.793196+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 2026-08-30T06:28:47.699412+00:00, confidence not recorded.
  - readme: https://github.com/jupyterlab-contrib/jupyterlab-variableInspector (fetched 2026-08-28T04:03:50.793196+00:00, sha da8f29bbf977)
- Data as of 2026-08-30T08:39:29.467469+00:00.