v2.0 is here — runtime theming & 6 new components. Read the changelog
The framework you already love.
Drop into your codebase in under a minute. Theme with your tokens, ship with your stack — no rewrites, no rebuilds.
Trusted by teams at
- ACME
- Stella
- QUANTUM
- Vertex
- NIMBUS
- Halcyon
Primitives that respect your stack
A design system you can grow into — never something you grow out of.
- 01Performance
Zero runtime tax
No emotion, no lodash, no date library. The bundle stays yours — components ship as pure CSS-and-DOM atoms.
- 02Accessibility
Accessible by default
Focus traps, keyboard maps, and WAI-ARIA semantics are built in — not opt-in. Every component ships a11y tests.
- 03Theming
Theme at runtime
applyTheme() flips every color, radius, and motion duration in one call. No rebuild, no provider, no flash.
Simple, predictable plans
No hidden seats. No vendor lock-in. Cancel any time.
Free
For hobby projects and tinkering.
$0- All 33 components
- MIT license, forever
- Unlimited projects
- Community support
- Most popular
Team
Production apps with a real team.
$29/seat/mo- Everything in Free
- Priority support · 24h SLA
- Theme designer (private beta)
- Audit log & SSO
Enterprise
Compliance-grade rollouts at scale.
Custom- Everything in Team
- SOC 2 · HIPAA support
- Dedicated solutions engineer
- Bring-your-own-cloud option
They moved fast. So can you.
A handful of teams who shipped with Sisyphos UI from day one.
“Sisyphos UI is the first design system we didn't have to wrestle into shape. The tokens, the a11y baseline, the cross-framework parity — it just slots in.”
MOMaya OkonkwoStaff engineer · Lattice“We rewrote our Angular dashboard with the angular binding and didn't change a single CSS rule. Three frameworks, one design contract — it actually works.”
DVDaniel VegaTech lead · Tribely
Build the thing. Ship the thing.
One npm install, one stylesheet, three frameworks. Stop yak-shaving your starter kit — start shipping the product.
Marketing landing
Full home page: announcement bar, primary nav, hero, logo cloud, feature grid, pricing tiers, testimonials, closing CTA, and footer. Drops in as `app/page.tsx`.
Composes 7 blocks