the beautiful open source design system by @calcom built on top of @base_ui and @shadcn CLI

Joined October 2024
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Pinned Tweet
10 Oct 2025
Origin UI is joining @calcom It’s now @coss_com, a more ambitious project, set to become the best infrastructure for the web We’re already working on the new UI library that will power the platform and remain open to everyone building great UIs Exciting times for open source!
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coss ui just hit 10k stars on GitHub, thanks everyone 🌟🫢
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Just shipped deduplicated toasts in @coss_com ui ✨ upsert by id updates existing toasts instead of stacking new ones
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Just dropped the @coss_com Drawer component πŸ“¦βœ¨ βœ… 4 directions 3 built-in variants βœ… Snap points & Nested support βœ… Swipe-to-open area βœ… Responsive examples (Dialog & Menu β†’ Drawer)
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coss.com retweeted
Menu on desktop ↔️ Drawer on mobile
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New home for coss ui ✨
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After the next release of @conar_app, we will be updating the UI and using whatever we can from @coss_com UI.
Command Ask AI mode πŸͺ„ dropping today
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coss.com retweeted
Command Ask AI mode πŸͺ„ dropping today
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19 Dec 2025
⌘ Command component just dropped ✨
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11 Dec 2025
Introducing Base UI v1 βœ”οΈŽ 35 unstyled UI components βœ”οΈŽ New npm package (base-ui/react) βœ”οΈŽ New website ✨ βœ”οΈŽ Configurable, composable, customizable βœ”οΈŽ Accessible, based on ARIA WCAG base-ui.com
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coss.com retweeted
Replying to @pacovitiello
you just made me IMMEDIATELLY add coss to our codebase, was on the fence but this singlehandedly just told me yall care about details as much as I do
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New props for the coss ui ScrollArea ✨ βœ… scrollFade β€” soft edge fades βœ… scrollbarGutter β€” side padding to avoid overlay scrollbars
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Flight timetable built with @tan_stack table @base_ui @coss_com ui πŸ‘Œ
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Refactored the Toast component to support anchored positioning and a tooltip-like style
15 Nov 2025
Replying to @devongovett @rauchg
We're adding <Toast.Positioner /> and <Toast.Arrow /> in the next release, so you can anchor Toast to a specific element. I'm curious to see how people will use it. deploy-preview-3210--base-ui…
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coss.com retweeted
proud to be on there with @coss_com ui 😍πŸ₯°
31 Oct 2025
You can now configure MCP right from the directory page. Copy to your components.json file.
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30 Oct 2025
Here is an awesome shadcn alternative Coss UI (previously Origin UI) by @coss_com. beautiful, slick, accessible React components, built on @base_ui, and maintained by top frontend engineers like @colmtuite Still, if you want to stick with Radix UI, nothing really matches what @shadcn offers
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coss.com retweeted
Made @Scheemeio a PWA for MVP. The mobile experience is slick now with it. My stack for development.. @nextjs - 100% Typescript Web application @coolifyio - VPS management & Deployment @shadcn - UI components @tailwindcss - CSS styling @Hostinger - VPS Hosting @tan_stack - Using Tanstack Query @realkeydb - Server Cache @tiptap_editor - Using for docs/editor @dndkit - Best DND package IMO @resend - Transactional Email @Cloudflare - R2 Object Storage @Docker - Containerized Deployments @coss_com - Formerly Origin UI (Cal Components) @better_auth - Currently NextAuth package @geteslint - Linter @stripe - Payments and billing/subscription management @lucide_icons - React Icons @prisma - ORM I am sure I am missing tons more things I have running in this, but I have put this so you can know you can just do things... Not an engineer by trade, and so many opinions here on X about the stack chosen and Next js this, and shadcn that. All of these things are battle tested and are simple to get going, so I highly recommend. #buildinpublic
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coss.com retweeted
if you havent tried @coss_com ui yet, you should! pnpm dlx shadcn@⁠latest add @⁠coss/combobox
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28 Oct 2025
SPOOOKY SEASON πŸ‘» πŸŽƒ
Skeleton component just dropped in coss ui πŸ‘»
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use @coss_com πŸ˜‰
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25 Oct 2025
custom UI type incoming to both @coss_com and @calcom
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