coss ui (was Origin UI)

Base UI copy-paste components

FreeUI component librariescoss.com

What it is

Origin UI has been rebranded to coss ui and rebuilt on Base UI primitives — now the design system of Cal.com. 50+ components in three layers (Primitives, Particles, Atoms), copy-paste, explicitly built 'for developers and AI'.

Why it earns a slot

Its historic strength was a very large set of input, select, checkbox and slider variants that shadcn ships only one flavor of — useful for subscribe forms, submission portals and contributor onboarding.

Know before you commit

Not the library you may be remembering. Old Origin UI was 400+ Radix-flavored components; coss ui is a smaller, differently-architected Base UI library under new branding with some pieces still 'coming soon'. Verify the licence file on GitHub before commercial use.

Field notes

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Pricing snapshot

Free / open source

Snapshots move fast — verify at checkout, and post a field note if it changed.

Drop into your Lovable chat

Evaluate coss ui (was Origin UI) (https://coss.com/ui) for this project, then use it only if it fits what we are already building.
Context: Base UI copy-paste components. Origin UI has been rebranded to coss ui and rebuilt on Base UI primitives — now the design system of Cal.com. 50+ components in three layers (Primitives, Particles, Atoms), copy-paste, explicitly built 'for developers and AI'.
Reviewer notes (general, not written for this codebase): Its historic strength was a very large set of input, select, checkbox and slider variants that shadcn ships only one flavor of — useful for subscribe forms, submission portals and contributor onboarding.
Watch out for: Not the library you may be remembering. Old Origin UI was 400+ Radix-flavored components; coss ui is a smaller, differently-architected Base UI library under new branding with some pieces still 'coming soon'. Verify the licence file on GitHub before commercial use.
Pricing: Free / open source
Rules: treat the notes above as background only. Do not assume a theme, style, layout or feature that is not already in this project — inspect the existing code first and ask me before changing visual direction.

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