foundation/foundation-sites
The most advanced responsive front-end framework in the world. Quickly create prototypes and production code for sites that work on any kind of device. observed · 2026-08-28
Health v2 · maintenance only
24/100
- Activity 2
- Release rhythm 8
- Longevity 100
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: 5438
- days_rel: 705
- days_push: 589
- n_releases_24m: 1
Adoption not part of the score
29784 stars · 5391 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded
Foundation for Sites is a responsive front-end framework providing HTML, CSS (Sass), and JavaScript components for building websites and apps that work on any device. It includes a customizable responsive grid, Sass mixins, JavaScript plugins, accessibility support, and a companion framework for responsive HTML emails.
Use cases
- build responsive websites that work on any device
- rapidly prototype web layouts with a grid system
- create accessible UI components like modals, tabs, and navigation
- customize styles with Sass mixins and variables
- design responsive HTML emails that work in Outlook
- build mobile-first content-focused sites
When to choose
- you need a mature, accessibility-focused responsive CSS framework
- you want deep Sass customization and semantic markup
- you're building responsive HTML emails including Outlook support
- you prefer a component library over utility-first CSS
When to avoid
- you want a utility-first framework like Tailwind CSS
- you need a React/Vue component ecosystem with active modern tooling
- you require frequent updates - development activity has slowed
- you're building a highly interactive SPA better served by a JS framework
Facets
framework · maturity maintenance
frontend-framework ui-components css-framework templating accessibility web-development frontend web-design email accessibility browser cross-platform responsive-design sass grid-system html-email javascript-plugins mobile-first prototype-to-production nodejs
10 sources
- readme: https://github.com/foundation/foundation-sites · fetched 2026-08-28 · b03a030b7f54
- homepage: https://get.foundation · fetched 2026-08-29 · c91b6fa707d1
- site_page: https://get.foundation/showcase/about.html · fetched 2026-08-29 · d4f0f4eff77f
- site_page: https://get.foundation/sites/getting-started.html · fetched 2026-08-29 · 3cad3b19526f
- site_page: https://get.foundation/sites/docs · fetched 2026-08-29 · 0e6da3ea1757
- site_page: https://get.foundation/emails/getting-started.html · fetched 2026-08-29 · e8e72309e469
- site_page: https://get.foundation/emails/docs · fetched 2026-08-29 · 2efd35311e55
- site_page: https://get.foundation/develop/getting-started.html · fetched 2026-08-29 · 0cdbfc98c408
- site_page: https://get.foundation/frameworks-docs.html · fetched 2026-08-29 · 702350e2b29a
- site_page: https://get.foundation/get-involved/faq.html · fetched 2026-08-29 · 09c438c0404c
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| foundation/foundation-sites | main | 24 |
For agents
markdown · JSON · MCP: product_card(name="foundation/foundation-sites")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem