Components
- Accordion
- Alert
- Alert Dialog
- Autocomplete
- Avatar
- Badge
- Breadcrumb
- Button
- Card
- Checkbox
- Checkbox Group
- Collapsible
- Combobox
- Dialog
- Field
- Fieldset
- Form
- Frame
- Group
- Input
- Label
- Menu
- Meter
- Number Field
- Pagination
- Popover
- Preview Card
- Progress
- Radio Group
- Scroll Area
- Select
- Separator
- Sheet
- Slider
- Switch
- Table
- Tabs
- Textarea
- Toast
- Toggle
- Toggle Group
- Toolbar
- Tooltip
Resources
Roadmap
Current state of coss.com ui and where we’re headed next.
coss.com 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.com 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.
On This Page