Alternatives to 21st.dev

4 editor-selected alternatives · 21st.dev overview →

source: tools.alternatives · stored order · active records only; review scores are annotations and never change membership or order

A directional evidence panel appears only when the substitute rationale, trade-offs, sources, and verification date have been recorded. Older selections without that panel remain visible but are unclassified under the new evidence contract.

Magic UI

open sourcefreemiumexplicit relation

Magic UI provides over 150 animated React components designed for creating visually impressive landing pages and marketing sites. Components include animated text effects, particle backgrounds, scroll-triggered animations, 3D cards, and interactive elements built on Tailwind CSS and Framer Motion. Copy-paste installation model following the shadcn/ui pattern.

Freemium open-source animated UI component library (MIT licensed core). The core catalog of 150+ animated components is 100% free ($0) to install via CLI for personal and commercial projects. Magic UI Pro offers commercial landing page templates and page sections starting at $49 for single templates or $199 for an all-access lifetime license with unlimited projects and updates.

shadcn/ui

open sourceexplicit relation

Copy-paste component library for React that puts you in full control — not a dependency, you own the code. Built on Radix UI primitives and Tailwind CSS for accessibility and styling. The most popular React component system in the ecosystem, setting the standard for how modern component libraries should be distributed and customized by developers.

Free and 100% open source under the MIT license. shadcn/ui is not distributed as an npm package dependency; components are copied directly into your codebase with full ownership and zero licensing or subscription costs.

Origin UI

open sourceexplicit relation

Origin UI is a curated collection of copy-paste React components built with Tailwind CSS v4 and Radix UI primitives. It provides production-ready UI patterns for dashboards, forms, navigation, data tables, and settings panels. Components are designed to be dropped directly into projects with minimal modification, following modern design conventions with dark mode support.

Free and 100% open source under the MIT license. Origin UI provides an extensive copy-and-paste component catalog built with Tailwind CSS and Radix UI with zero licensing fees, seat restrictions, or paywalls for both personal and commercial use.

assistant-ui

open sourcefreemiumexplicit relation

assistant-ui is a TypeScript/React component library for building AI chat interfaces with streaming responses, tool rendering, branching conversations, and LLM provider integrations. It supports Vercel AI SDK, LangGraph, and custom backends out of the box. Used by LangChain, Browser Use, and Stack AI. YC W25-backed with 9,000+ GitHub stars and 450K+ monthly npm downloads.

Open-source React component library (MIT License) available for $0 self-hosted development. For managed thread persistence and chat history, assistant-cloud provides a Free plan ($0/mo up to 200 MAU), Pro plan at $50/mo (500 MAU included, +$0.10/additional MAU), and custom Enterprise plans for dedicated infrastructure, data replication, and enterprise SLAs.

Open-source 21st.dev alternatives

Magic UI, shadcn/ui, Origin UI, assistant-ui — see all open-source developer tools.

Free 21st.dev alternatives

Magic UI, assistant-ui offer a free plan or free tier.

More UI & Design to Code tools

same category, not editor-selected alternatives — see how 21st.dev compares →

FigmaFigma is the industry-standard collaborative design platform for UI/UX work, prototyping, and design systems. Runs in the browser with real-time multiplayer editing, components, auto-layout, variants, dev mode, plugins, and FigJam whiteboards. Integrates with AI design-to-code tools like Lovable, v0, Builder.io, and Anima to turn frames into production React, Vue, or iOS/Android code.GradioGradio is a 42K+ star Apache-2.0 Python library for building interactive web interfaces around machine-learning functions and apps. It supports 40+ components for text, images, audio, video, 3D, chat, plots, JSON, and dataframes. Apps can be hosted free on Hugging Face Spaces, shared through public links, or extended with server-side rendering, streaming, API clients, and MCP server support.Magic PatternsMagic Patterns turns product ideas, prompts, screenshots, and existing UI into editable, code-ready interfaces. Its design-system-aware editor supports collaborative iteration, two-way GitHub sync, and an MCP workflow for moving designs between the canvas and coding agents—positioning it between prompt-to-app builders and design-handoff tools rather than as a single-screen generator.v0Vercel's AI-powered UI generation tool that creates production-ready React and Next.js components from text or image prompts. Outputs clean code using shadcn/ui and Tailwind CSS, deployable to Vercel or copyable into existing projects. Supports iterative refinement through conversation, live browser preview, and generates accessible, responsive code. Ideal for rapidly prototyping landing pages, dashboards, forms, and UI components without manual setup.Panda CSSPanda CSS is a zero-runtime CSS-in-JS framework that generates atomic CSS at build time from type-safe style definitions. It provides the developer experience of CSS-in-JS with runtime performance of static CSS extraction. Supports design tokens, responsive styles, conditional variants, and recipes for component style APIs. 335K+ weekly npm downloads for @pandacss/dev with RSC compatibility.PuckPuck is an open-source visual page builder for React that gives teams a drag-and-drop editor backed by their own components. The MIT-licensed core remains self-hostable and persists plain JSON, while Puck Cloud and Puck AI now add optional hosted and agentic editing layers. With 12.8K+ stars, it is the dev-first visual editor to watch.Bolt.newAI-powered browser-based full-stack app builder from StackBlitz that turns natural language prompts into working web applications with zero local setup. Runs on WebContainers — a full Node.js runtime in the browser — giving AI control over filesystem, packages, terminal, and dev server. Supports React, Next.js, Vue, Astro, Svelte with live preview and one-click deploy to Netlify or Vercel. V2 adds built-in databases, auth, storage, and hosting via Bolt Cloud. 5M+ users.Figma Context MCPFigma Context MCP is an MCP server for giving coding agents structured access to Figma design context during implementation. Instead of copying screenshots or hand-written design specs into prompts, teams can expose layout, component, and context information to agents such as Cursor, Claude Code, and other MCP-compatible coding workflows. It is a strong design-to-code bridge for teams trying to reduce hallucinated UI details and tighten handoff between designers and AI-assisted developers.UizardAI-assisted product-design platform that turns prompts, screenshots and hand-drawn sketches into editable UI flows for non-designers and early product ideation, complementing rather than duplicating developer-first code generators.

FAQ

Which 21st.dev alternative is listed first?

Magic UI is first in the editor-selected list of 4 21st.dev alternatives. The stored order is editorial; review scores do not determine membership or position.

Are there open-source 21st.dev alternatives?

Yes — Magic UI, shadcn/ui, Origin UI, and more are open source.

Are there free 21st.dev alternatives?

Yes — Magic UI, assistant-ui offer a free plan or free tier.