# hyperapp/hyperapp

1kB-ish JavaScript framework for building hypertext applications

Repository: https://github.com/hyperapp/hyperapp
Canonical: https://ross.abutalabs.com/products/hyperapp
Language: JavaScript
License: MIT
License Family: permissive
Topics: framework, javascript, web, vdom
Last push: 2025-03-20T01:04:38+00:00

## Health v2 (maintenance only)
Score: 28/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 12, release rhythm 8, longevity 100
- inputs: {"age_days": 3512, "days_push": 532, "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 19198, forks 775 (observed 2026-08-28T04:11:27.517168+00:00)

## What it is
Hyperapp is an ultra-lightweight (~1 kB) JavaScript framework for building browser-based hypertext applications. It combines a virtual DOM with an optimized diff algorithm, declarative views, and built-in state management through actions, effects, and subscriptions.

## Use cases
- build a small single-page web app without a build step
- create a todo app with declarative views and state updates
- embed lightweight interactive UI in a page without heavy dependencies
- learn a minimal functional frontend framework
- render efficient DOM updates from app state

## When to choose
- you need a tiny bundle size and minimal concepts
- you want declarative virtual DOM rendering with built-in state management
- you prefer functional, no-build-step development in idiomatic JavaScript

## When to avoid
- you need a large ecosystem, routing, or enterprise tooling out of the box
- you require JSX, TypeScript-first ergonomics, or extensive official component libraries
- you are building complex large-scale apps that benefit from mature frameworks like React or Vue

## Facets
- artifact type: framework
- maturity: stable
- function: frontend-framework, state-management, ui-components
- domain: web-development, frontend
- platform: browser
- tags: virtual-dom, micro-framework, declarative-ui, functional, tiny, hypertext-applications, nodejs, web-server

## Member repositories
- hyperapp/hyperapp (main) score 28

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:11:27.517168+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 2026-08-29T17:00:24.466125+00:00, confidence not recorded.
  - readme: https://github.com/hyperapp/hyperapp (fetched 2026-08-28T04:11:27.517168+00:00, sha 3491a043f973)
- Data as of 2026-08-30T08:39:29.467469+00:00.