# atomicojs/atomico

Atomico a micro-library for creating webcomponents using only functions, hooks and virtual-dom.

Repository: https://github.com/atomicojs/atomico
Canonical: https://ross.abutalabs.com/products/atomico
Homepage: https://atomicojs.dev
Language: TypeScript
License: MIT
License Family: permissive
Topics: reactive-properties, shadow-dom, jsx, web-components, atomico, hooks
Last push: 2026-07-19T04:31:10+00:00

## Health v2 (maintenance only)
Score: 86/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 93, release rhythm 69, longevity 100
- inputs: {"age_days": 2930, "days_push": 45, "days_rel": 45, "gap_med": 117.0, "n_releases_24m": 3}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1277, forks 44 (observed 2026-08-28T04:04:13.208834+00:00)

## What it is
Atomico is a micro-library for building web components using only functions, hooks, and a virtual DOM, with a React-like syntax in JavaScript or TypeScript. It lets you define custom elements that work anywhere (React, Vue, Svelte, plain HTML) with reactive properties, shadow DOM, and full type support.

## Use cases
- create web components without classes
- build a design system with reusable custom elements
- use React-style hooks to write web components
- share UI components across React, Vue, and Svelte
- progressively add components to an existing React app
- build lightweight performant interfaces with shadow DOM

## When to choose
- you want framework-agnostic web components with a React-like developer experience
- you need small bundle size and fast rendering for custom elements
- you're building a design system consumed by multiple frameworks
- you prefer functions and hooks over class-based component APIs

## When to avoid
- you need a full application framework with routing and SSR out of the box
- your team is heavily invested in a single framework's native component model
- you need a large ecosystem of third-party components and tooling
- you don't need web components and can use a mainstream framework directly

## Facets
- artifact type: library
- maturity: active
- function: frontend-framework, ui-components, state-management, ssr
- domain: web-development, frontend, web-design
- platform: browser, cross-platform
- tags: web-components, hooks, virtual-dom, shadow-dom, jsx, react-like, micro-library, design-systems, custom-elements, web-server, nodejs, typescript

## Member repositories
- atomicojs/atomico (main) score 86

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:13.208834+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 2026-08-30T05:02:49.152605+00:00, confidence not recorded.
  - readme: https://github.com/atomicojs/atomico (fetched 2026-08-28T04:04:13.208834+00:00, sha e9a6402fa486)
  - homepage: https://atomicojs.dev (fetched 2026-08-29T12:13:52.084665+00:00, sha ade072c7cb2a)
- Data as of 2026-08-30T08:39:29.467469+00:00.