# antonycourtney/tad

A desktop application for viewing and analyzing tabular data

Repository: https://github.com/antonycourtney/tad
Canonical: https://ross.abutalabs.com/products/tad
Homepage: http://tadviewer.com
Language: TypeScript
License: MIT
License Family: permissive
Topics: desktop-application, pivots, tabular-data, csv, pivot-tables, data-science, data-analysis, database, duckdb, parquet-viewer
Last push: 2025-03-05T22:46:06+00:00

## Health v2 (maintenance only)
Score: 27/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 9, release rhythm 8, longevity 100
- inputs: {"age_days": 3600, "days_push": 546, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3477, forks 132 (observed 2026-08-28T04:08:06.163236+00:00)

## What it is
Tad is a free, MIT-licensed desktop application for viewing and analyzing tabular data in CSV, Parquet, SQLite, and DuckDB formats. It renders fast, scrollable grids for millions of rows and provides an interactive hierarchical pivot table backed by an embedded DuckDB engine that generates SQL for pivots, filters, aggregates, and sorting.

## Use cases
- quickly view a large csv file
- open and explore parquet files
- inspect sqlite or duckdb database tables
- build pivot tables from tabular data
- filter and aggregate millions of rows interactively
- copy table data into excel or google sheets
- export filtered tables as csv or parquet

## When to choose
- you need a fast GUI viewer for large CSV, Parquet, or database files
- you want interactive pivot-table style exploration without writing SQL
- you are a data engineer or scientist doing quick ad-hoc data inspection

## When to avoid
- you need a polished, fully supported production tool - it is a hobby project with known bugs
- you need programmatic data processing or scripting rather than interactive viewing
- you need a web-based or collaborative data analysis tool

## Facets
- artifact type: application
- maturity: active
- function: data-visualization, database, gui, cli
- domain: data-science, data-visualization, analytics, developer-tools, desktop-applications
- platform: windows
- tags: pivot-tables, csv-viewer, parquet-viewer, duckdb, sqlite, tabular-data, data-exploration, macos, linux, desktop, typescript

## Member repositories
- antonycourtney/tad (main) score 27

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:08:06.163236+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 2026-08-29T18:36:30.731128+00:00, confidence not recorded.
  - readme: https://github.com/antonycourtney/tad (fetched 2026-08-28T04:08:06.163236+00:00, sha 1f41176f9d03)
  - homepage: http://tadviewer.com (fetched 2026-08-29T09:30:46.396292+00:00, sha f0591bed8a80)
- Data as of 2026-08-30T08:39:29.467469+00:00.