# cappuccino/cappuccino

Web Application Framework in JavaScript and Objective-J

Repository: https://github.com/cappuccino/cappuccino
Canonical: https://ross.abutalabs.com/products/cappuccino
Homepage: https://cappuccino.dev/
Language: Objective-J
License: LGPL-2.1
License Family: copyleft
Last push: 2026-08-26T18:53:19+00:00

## Health v2 (maintenance only)
Score: 77/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 35, longevity 100
- inputs: {"age_days": 6572, "days_push": 7, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2264, forks 333 (observed 2026-08-28T04:06:32.516517+00:00)

## What it is
Cappuccino is an open-source web application framework that lets developers build desktop-class applications in the browser using Objective-J, a superset of JavaScript inspired by Objective-C. It implements Cocoa/GNUstep-style APIs (Foundation and AppKit), abstracting away HTML, CSS, and the DOM in favor of rich UI controls like table views, drag-and-drop, and undo/redo.

## Use cases
- build complex data-rich line-of-business web applications
- create desktop-like UIs in the browser without touching HTML or CSS
- port Cocoa/Objective-C development skills to web apps
- build rich table views with sorting, virtualization, and column settings
- design UIs visually with Xcode Interface Builder
- develop cross-browser rich internet applications

## When to choose
- you want Cocoa-style APIs and paradigms for browser apps
- you're building complex, app-like (not document-like) web software
- you prefer Objective-C-style messaging and inheritance over raw DOM manipulation
- you need polished desktop-grade controls out of the box

## When to avoid
- you're building content-focused websites or SEO-sensitive pages
- your team only knows standard JavaScript/TypeScript and modern web stacks
- you need a large ecosystem of npm packages and community tooling
- you want a framework with mainstream adoption and hiring pool

## Facets
- artifact type: framework
- maturity: active
- function: frontend-framework, ui-components, state-management, compiler, programming-language
- domain: web-development, frontend, desktop-applications, programming-languages
- platform: browser, cross-platform
- tags: objective-j, cocoa, appkit, rich-internet-applications, interface-builder, desktop-class-web-apps, nodejs, macos

## Member repositories
- cappuccino/cappuccino (main) score 77

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:32.516517+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 2026-08-30T02:42:26.335538+00:00, confidence not recorded.
  - readme: https://github.com/cappuccino/cappuccino (fetched 2026-08-28T04:06:32.516517+00:00, sha 5614f4b19daa)
  - homepage: https://cappuccino.dev/ (fetched 2026-08-29T10:22:48.965870+00:00, sha 193bb5386c2a)
  - site_page: https://www.cappuccino.dev/learn/documentation (fetched 2026-08-29T10:22:48.969765+00:00, sha 4f4c89324099)
  - site_page: https://www.cappuccino.dev/support/faq.html (fetched 2026-08-29T10:22:48.971673+00:00, sha 831f26cb7c91)
- Data as of 2026-08-30T08:39:29.467469+00:00.