# uwdata/mosaic

An extensible framework for linking databases and interactive views.

Repository: https://github.com/uwdata/mosaic
Canonical: https://ross.abutalabs.com/products/uwdata-mosaic
Homepage: https://idl.uw.edu/mosaic/
Language: TypeScript
License: NOASSERTION
License Family: other
Topics: data, duckdb, interaction, scalability, visualization
Last push: 2026-08-26T18:44:23+00:00

## Health v2 (maintenance only)
Score: 99/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 99, longevity 97
- inputs: {"age_days": 1364, "days_push": 7, "days_rel": 8, "gap_med": 8, "n_releases_24m": 36}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1365, forks 120 (observed 2026-08-28T04:04:31.195810+00:00)

## What it is
Mosaic is an extensible TypeScript framework that links interactive data views (plots, tables, widgets) to a backing DuckDB database for scalable processing. Components publish declarative SQL queries that a coordinator manages, optimizes, and cross-filters, enabling interactive exploration of millions to billions of records in web apps or Jupyter notebooks.

## Use cases
- visualize and explore datasets with millions or billions of records interactively
- build data-driven web dashboards backed by DuckDB
- cross-filter linked charts and tables in the browser
- analyze large datasets interactively in Jupyter notebooks
- run client-side analytics with DuckDB-WASM in the browser
- create custom extensible data-driven view components

## When to choose
- you need interactive visualization of very large datasets beyond what in-memory JS tools handle
- you want linked/cross-filtered views powered by a real SQL engine
- you want DuckDB either server-side or in-browser via WebAssembly
- you want a declarative visualization grammar (vgplot) with extensible architecture

## When to avoid
- you need simple static charts of small datasets where a lighter library suffices
- your stack requires a database other than DuckDB
- you need server-side rendered images rather than interactive web views

## Facets
- artifact type: framework
- maturity: active
- function: data-visualization, database, web-framework, charts
- domain: data-visualization, databases, data-science, web-development, analytics
- platform: browser, python, wasm, cross-platform
- tags: duckdb, interactive-visualization, cross-filtering, vgplot, jupyter, scalable-data-views, typescript, web-server, nodejs

## Member repositories
- uwdata/mosaic (main) score 99

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:31.195810+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 2026-08-30T04:41:17.376612+00:00, confidence not recorded.
  - readme: https://github.com/uwdata/mosaic (fetched 2026-08-28T04:04:31.195810+00:00, sha e51270449257)
  - homepage: https://idl.uw.edu/mosaic/ (fetched 2026-08-29T11:58:52.068367+00:00, sha 460f3f6ca595)
- Data as of 2026-08-30T08:39:29.467469+00:00.