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Batteries-included app building kit

Spezi Web Design System

An opinionated, feature-rich frontend toolset for rapid application development.

Built on modern standards with sensible defaults, yet with escape hatches. You build what matters for your users, we handle the rest.

Key Features

Everything you need to build modern, accessible web applications

Opinionated Defaults

Sensible choices made for you, accelerating development without decision fatigue.

Modern Stack

Built on Radix UI, Tailwind CSS v4, TypeScript, and React 19 and other well-known open source libraries.

Feature-Rich

Comprehensive library including form handling, navigation, application shell, utilities and more.

Accessible

WCAG-compliant components with keyboard navigation and screen reader support.

Type-Safe

Full TypeScript coverage with strict typing for enhanced DX.

Well-Tested

High test coverage and usage across Stanford projects ensuring reliability in production.

Used in Production

Real-world Stanford projects using this library

ENGAGE-HF Web Frontend

Heart failure management platform

View Project

Spezi Web Study Platform

Research study management system

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RadGPT

AI-powered radiology assistance tool

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Part of the Spezi Web Ecosystem

spezi-web-configurations

Shared ESLint, Prettier, and TypeScript configurations used across Spezi Web projects.

View Package

spezi-web-template-application

Complete application template combining all Spezi Web packages for rapid bootstrapping.

View Template

Ready to Build Something Amazing?

Choose your path to get started with Spezi Web Design System

Explore the Documentation

Dive into comprehensive guides, API references, and examples to learn everything about our components and utilities.

Browse Documentation

Start with Template

Jump right in with our complete application template. Everything configured and ready to go in seconds.

Use Template Application