# adobe-fonts/source-sans

Sans serif font family for user interface environments

Repository: https://github.com/adobe-fonts/source-sans
Canonical: https://ross.abutalabs.com/products/source-sans
Homepage: https://adobe-fonts.github.io/source-sans
Language: CSS
License: OFL-1.1
License Family: other
Topics: opentype-fonts, otf, afdko, ttf-fonts, fonts, variable-fonts
Last push: 2025-10-28T14:26:26+00:00

## Health v2 (maintenance only)
Score: 45/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 49, release rhythm 8, longevity 100
- inputs: {"age_days": 5137, "days_push": 309, "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 3727, forks 245 (observed 2026-08-28T04:08:15.603858+00:00)

## What it is
Source Sans 3 is an open-source sans serif OpenType font family designed by Adobe for user interface environments, distributed under the SIL Open Font License. The repository hosts the font source files and build instructions, with releases including static and variable font formats.

## Use cases
- find an open-source sans serif font for a web app UI
- download a variable font family for interface design
- get a UI typeface with broad multilingual script support
- self-host a free alternative to commercial UI fonts
- build custom font variants from OpenType source files

## When to choose
- you need a freely licensed, professionally designed sans serif for UI or documents
- you want variable font support or many weights including italics
- you need wide language and script coverage under OFL

## When to avoid
- you need a serif or monospace typeface
- you require a display or decorative font
- you need fonts with licensing for embedding in commercial hardware products without checking OFL terms

## Facets
- artifact type: dataset
- maturity: stable
- function: ui-components, internationalization
- domain: web-design, web-development
- platform: cross-platform
- tags: fonts, opentype, variable-fonts, sans-serif, typography, open-source-fonts, localization, web-server

## Member repositories
- adobe-fonts/source-sans (main) score 45

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:08:15.603858+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 2026-08-29T18:29:14.890586+00:00, confidence not recorded.
  - readme: https://github.com/adobe-fonts/source-sans (fetched 2026-08-28T04:08:15.603858+00:00, sha 7063447cc731)
  - homepage: https://adobe-fonts.github.io/source-sans (fetched 2026-08-29T09:23:46.395989+00:00, sha d920c1dcb862)
- Data as of 2026-08-30T08:39:29.467469+00:00.