Design Systems Gallery

Developer platforms

18 design systems

Companies that build tools for developers tend to publish their design systems in the open, often with the code on GitHub. GitHub's Primer, GitLab's Pajamas, HashiCorp's Helios, Elastic UI, Twilio Paste and MongoDB's LeafyGreen are all public, and many of them document their accessibility work in detail.

They are a good reference for technical interfaces: code blocks, logs, settings pages, status badges and consoles. Stack Overflow's Stacks and Mozilla's Protocol show how far a mostly CSS system can go, while Vercel's Geist and Cloudflare's Kumo are recent additions.

The stack varies more than you might expect: Primer ships React and Rails components, Pajamas is built with Vue, Helios with Ember, and Stacks is mostly CSS.

Cloudflare Kumo

Cloudflare

4.1k

Cloudflare's component library for its own product interfaces.

updated today
  • Components: yes
  • Voice: no
  • Kit: no
  • GitHub
Contentful Forma 36

Contentful

361

Forma 36, Contentful's React design system, also used to build apps for its platform.

Reactupdated today
  • Components: yes
  • Voice: yes
  • Kit: yes
  • GitHub
GitHub Primer

GitHub

3.9k

GitHub's design system, with React components, CSS and Rails ViewComponents.

Reactupdated today
  • Components: yes
  • Voice: no
  • Kit: yes
  • GitHub
HashiCorp Helios

HashiCorp

516

Helios, HashiCorp's design system for its cloud products, built with Ember components.

Emberupdated today
  • Components: yes
  • Voice: yes
  • Kit: yes
  • GitHub
Heroku Purple3

Heroku

Purple3, Heroku's design system for its dashboard and websites.

  • Components: yes
  • Voice: no
  • Kit: no
  • Code: no
JetBrains Ring UI

JetBrains

3.8k

Ring UI, JetBrains' React components for web tools such as YouTrack.

Reactupdated today
  • Components: yes
  • Voice: no
  • Kit: no
  • GitHub
Mozilla Protocol

Mozilla

298

Protocol, Mozilla's CSS and pattern library for its websites.

CSSupdated 2d ago
  • Components: yes
  • Voice: no
  • Kit: no
  • GitHub
Twilio Paste

Twilio

480

Paste, Twilio's React design system.

Reactupdated 1mo ago
  • Components: yes
  • Voice: yes
  • Kit: yes
  • GitHub
Vercel

Vercel

Geist, Vercel's design system and typeface.

  • Components: yes
  • Voice: no
  • Kit: no
  • Code: no

Built on the open alexpate/awesome-design-systems list by its contributors, released under the Unlicense. Design Systems Gallery is an independent project, not affiliated with the list's maintainers.

About Synced Oct 16, 2026

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