OPEN SOURCE OPERATIVE SYSTEM

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HOW IT WORKS

One unified system. Each package solves a specific problem.

FOUNDATION

TEMPUS~1KB · "time"

Single requestAnimationFrame loop for your entire app. Prevents multiple RAF loops from fighting each other.

RAF Orchestration

orchestrates

ANIMATION

LENIS~3KB · "smooth"

Smooth scroll with momentum. Virtual scroll for creative layouts.

Scroll Engine

ELASTICA~5KB · "elastic"

Physics-based animations with spring dynamics and inertia.

Physics Engine

+ GSAP / THREEexternal

Plug in any animation library. They all share the same RAF.

Your Libraries

measured by

REACT

HAMO~2KB · "hook"

useRect, useWindowSize, useIntersectionObserver — without triggering re-renders.

Performance Hooks

Click any package to explore →

WHY WE BUILT THIS

Every client project started with the same problems:

Multiple RAF loops fighting each other
Janky scroll on creative sites
React re-rendering on every measurement
Context-switching between package managers

So we fixed them. Once. For everyone.

THE PACKAGES

Smooth scroll library with native feel

Docs

One RAF loop to rule them all

Docs

Performance React hooks that don't cause re-renders

Docs

Universal package manager wrapper

Docs

Physics engine for elastic collisions

Docs

"beginning"

START WITH SATUS

The modern Next.js starter that brings it all together.

Next.js 16 + React 19 + Tailwind v4
Lenis + Tempus + Hamo + Elastica pre-configured
Optional WebGL with lazy global canvas
Sanity, Shopify, HubSpot integrations
React Compiler enabled (no manual memoization)

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