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---

title: Roadmap description: Current state of coss ui and where we’re headed next.

coss ui is the evolution of Origin UI, an open-source collection of React and Tailwind components created by Pasquale Vitiello and Davide Pacilio. It was recently acquired by Cal.com and grown into a broader, more ambitious ecosystem, with Pasquale contributing directly to the development of the new UI.

Our goal is to bring together the best parts of Origin UI with a stronger foundation—Base UI primitives—so developers get not just components, but a layered system of primitives, particles, and atoms.

Origin UI

Origin UI offered a large collection of 600+ ready-to-use UI components. With the transition to coss ui:

• The existing Origin UI components will evolve into particles—higher-level UI patterns composed of Base UI primitives.
• The original Origin UI collection remains available on this page, so developers can continue to access it during the transition.

Current Status

• 40+ UI primitives already available, with more on the way.
• A growing set of particles, progressively expanding to match and surpass the current Origin UI collection.

What’s Next

• Expand the primitives set, ensuring full coverage of common UI needs.
• Add more particles, aligning with and eventually replacing the original Origin UI collection.
• Introduce atoms, API-enhanced components that bring external integrations out of the box.

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