yui/yui3
A library for building richly interactive web applications. observed · 2026-08-28
Health v2 · maintenance only
26/100
- Activity 7
- Release rhythm 8
- Longevity 100
Flags: no_license
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 6480
- days_rel: n/a
- days_push: 560
- n_releases_24m: 0
Adoption not part of the score
4159 stars · 1269 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded
YUI 3 is Yahoo's open-source JavaScript and CSS library for building richly interactive web applications, offering DOM utilities, UI widgets, event handling, and a modular architecture. The project was officially discontinued in August 2014 and receives no further bug or security fixes.
Use cases
- build interactive web applications with dom manipulation and widgets
- maintain a legacy codebase that depends on YUI
- use drag and drop and grid layout components in older browsers
- reference a mature modular JavaScript framework from the pre-React era
- run YUI on Node.js for server-side rendering of pages
When to choose
- you are maintaining or migrating an existing application already built on YUI
- you need to support very old browsers with a battle-tested legacy library
- you want to study a historically significant modular frontend framework
When to avoid
- you are starting a new web project - use modern frameworks like React, Vue, or Svelte
- you need security patches or ongoing bug fixes
- you want an active community, modern tooling, or npm ecosystem integration
Facets
library · maturity abandoned
frontend-framework ui-components animation state-management templating web-development frontend developer-tools browser cross-platform javascript css-framework dom-manipulation yahoo unmaintained legacy nodejs
2 sources
- readme: https://github.com/yui/yui3 · fetched 2026-08-28 · 47df84c92fcc
- homepage: http://yuilibrary.com/ · fetched 2026-08-29 · 6e1eb7743e6f
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| yui/yui3 | main | 26 |
For agents
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem