NexAuth — Premium Authentication UI System for AI SaaS Products

Build professional authentication flows in minutes, not days.

NexAuth is a complete authentication UI system designed for AI startups, SaaS products, developer tools, and modern web applications. Inspired by products like Linear, Vercel, Stripe, and Clerk, it provides everything needed to create a polished authentication experience without React, npm, or build tools.

Simply download, unzip, and open the HTML files to start customizing.

Perfect For

• AI SaaS Products

• Startup MVPs

• Developer Tools

• Internal Dashboards

• Automation Platforms

• Indie Hacker Projects

• Client Projects

• Learning Modern UI Design

What's Included

✅ Login Page

✅ Sign Up Page

✅ Forgot Password Page

✅ Reset Password Page

✅ OTP Verification Page

✅ Two-Factor Authentication

✅ Account Success Screen

✅ Error States

✅ Multi-Step Onboarding Flow

✅ Authentication Design System

Premium Features

• 10+ Production-Ready Screens

• 4 Built-In Themes (Dark, Light, Midnight, Neon)

• Responsive Mobile-First Design

• Password Strength Indicators

• OTP Auto-Focus & Countdown Timer

• Theme Persistence

• Glassmorphism Components

• Smooth Animations

• Modern SaaS Styling

Tech Stack

• HTML5

• Tailwind CSS CDN

• Alpine.js

• Vanilla JavaScript

No React.

No npm.

No Build Tools.

Why Choose NexAuth?

Most authentication templates only provide a login page.

NexAuth delivers a complete authentication system, helping founders and developers launch faster while maintaining a professional user experience.

Save hours of design and frontend development by starting with a complete, production-ready authentication workflow.

Files Included

nexauth/

├── Login

├── Signup

├── OTP Verification

├── Two-Factor Auth

├── Onboarding

├── Success Screens

├── Error States

├── Themes

├── Assets

└── Documentation

Support

Questions are answered within 24–48 hours.

Built by NexFlow Studio.