agents-ui
On 21st1livekit.com
This is a shadcn/ui component registry that distributes copy-paste React components for building LiveKit AI Agent interfaces.
16 components★ 21klast commit today
Libraries
AI block registries
assistant-ui.com
Radix-style React primitives for AI chat with adapters for AI SDK, LangGraph, Mastra, and custom backends.
142 components★ 12klast commit today
prompt-kit
On 21st9prompt-kit.com
Core building blocks for AI apps. High-quality, accessible, and customizable components for AI interfaces.
21 components★ 3.1klast commit yesterdayai-elements
On 21st10ai-sdk.dev
Pre-built components like conversations, messages and more to help you build AI-native applications faster.
48 components★ 2.5klast commit 1mo ago
brainless.swerdlow.dev
Claude Code, Codex, and Grok interfaces as shadcn components — accessible React terminal-agent UI for docs, demos, and product surfaces.
39 components★ 821last commit 4d agosimple-ai
On 21st8simple-ai.dev
Curated agent examples you can copy into your app. Chat page, input, tools, and a worked fold.
39 components★ 759last commit 11d ago
agentcn.vercel.app
Production-ready agents, made simple. Ready to use, customizable AI agent recipes. Built on Eve and Flue.
76 components★ 479last commit 16d ago
ui.usenotra.com
Components and blocks for building modern dashboards, straight from the design system behind Notra.
55 components★ 226last commit today
nexus-ui
On 21st3nexus-ui.dev
Open-source component library of composable, copy-paste primitives for building AI interfaces (chat, streaming, multimodal)
15 components★ 131last commit 3mo ago
agent-elements.21st.dev
On 21st22agent-elements.21st.dev
25 components★ 104last commit 5mo ago
localmode.ai
Local-first, offline AI UI primitives + blocks - run ML models (chat, RAG, vision, audio) entirely in the browser. No servers, no API keys.
143 components★ 42last commit today
ui.meta-cloud-api.site
Production-ready WhatsApp Web UI components built on WDS design tokens with Tailwind CSS v4 and @base-ui/react.
29 components★ 33last commit yesterday
sitesearch.algolia.com
Enterprises and developers use Algolia's AI search infrastructure to understand users and show them what they're looking for.
5 components★ 24last commit 2mo agopacekit-gsap
On 21st8gsap.pacekit.dev
Official feedback, bug reports, and feature requests for paceui.com
28 components★ 15last commit 2mo ago
agentblog.dev
A complete blog for Next.js, installed like a component. Built to be read and cited by AI search engines.
10 components★ 10last commit 1mo ago
ui.pipecat.ai
Components, hooks, visualizers, and composable blocks for Pipecat and voice AI.
18 components★ 4last commit yesterday
8848.aayurtshrestha.com.np
Minimal, precise Himalayan-inspired React components on Radix primitives and Tailwind CSS. Buttons, overlays, tables, forms and agentic patterns you can own.
9 components★ 3last commit yesterday
scrimui.dev
Free, open-source React components and patterns for AI interfaces, including prompts, streaming messages, reasoning, tool calls, citations, agents, memory, voice, and safety.
68 components★ 3last commit today
seamui.dev
Own-your-code components rebuilt on Base UI with a motion.dev feel layer — springs, touch feedback, and depth — plus an agent-workbench tier (composer, voice, status, connectors) for AI-era interfaces.
39 components★ 2last commit 2mo agoagentui.pro
Open-source React components for AI agent conversations, reasoning, tools, approvals, and streamed responses.
21 componentsasanshay
On 21st7ds.asanshay.com
Clean, beautiful, and simple UI primitives and AI elements.
21 componentskobra.systems
Polished components for teams building exceptional products and experiences.
35 componentsinferencesh
On 21st6ui.inference.sh
batteries-included agent components by inference.sh. chat interfaces with streaming, tool invocation rendering, syntax-highlighted code blocks, markdown renderer, and more.
14 components
