# PaceUI Blocks

> Pre-built React auth and marketing UI blocks built on shadcn

PaceUI provides ready-to-use animated UI blocks, components, and templates for React, Next.js, and TanStack Start. It specializes in drop-in auth sections like login and registration forms featuring split layouts, social proof, and shader animations that can be installed directly or via an MCP server.

Website: https://paceui.com/blocks/marketing/register

## What it is for

- Add responsive sign-in and sign-up flows to a Next.js web application
- Install pre-designed auth layouts into a codebase using AI prompts with MCP
- Incorporate animated split-screen designs with testimonials and shader backdrops

## Features

- Wide range of auth layouts including split screen, card forms, and enterprise SSO
- Built on Motion, Tailwind CSS, and shadcn UI primitives
- MCP server support for installing blocks through AI coding assistants
- Support for Next.js and TanStack Start frameworks
- Visual variations with shader backgrounds, glassmorphism, and dynamic metric cards

## Pricing

Freemium. Free tier with 30+ blocks; paid licenses for full access

## Details

- Type: Web app
- Category: [Development](https://xiry.app/topics/development.md)
- Topic: [UI Components](https://xiry.app/topics/development/ui-components.md)
- Open source: no
- Platforms: Web, Code library, Command line
- For: React and Next.js frontend developers and indie hackers
- Alternative to: shadcn/ui, Tailwind UI, Aceternity UI
- Tags: react, nextjs, shadcn, ui blocks, authentication, tailwind

## Why it was saved

- [@withden_, 28 August 2026](https://x.com/withden_/status/2093360022533349684): 60+ free and premium auth blocks — high-converting auth, simple SaaS, social sign-on, enterprise variants — copy a prompt or npx command and the component lands in your project.

## Compare

- [Alternatives to Tailwind UI](https://xiry.app/alternatives/tailwind-ui.md)
- [Alternatives to Aceternity UI](https://xiry.app/alternatives/aceternity-ui.md)
- [Alternatives to shadcn/ui](https://xiry.app/alternatives/shadcn-ui.md)

## Related

- [shadcn/ui](https://xiry.app/resources/shadcn-ui-1902): Copy-paste React UI components built with Tailwind CSS and Radix primitives. (Website, Open source)
- [Efferd](https://xiry.app/resources/efferd): Pre-built, responsive shadcn/ui blocks and layouts for React applications (Web app, Freemium)
- [Motion](https://xiry.app/resources/motion): Open-source animation library for React, Vue, and vanilla JavaScript (Website, Freemium)
- [React Bits](https://xiry.app/resources/react-bits): Open-source animated and interactive React UI components and backgrounds (Website, Freemium)
- [21st.dev](https://xiry.app/resources/21st-dev): Curated directory of crafted React, Tailwind, and shadcn UI components. (Website, Freemium)
- [lucide-animated](https://xiry.app/resources/lucide-animated): Open-source animated React icons built with Lucide and Motion (Web app, Open source)

Updated 10 October 2026. Page: https://xiry.app/resources/paceui-blocks

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