All assets that are used to build our templates are 100% free, MIT licensed, Open-source our our in house tools to make it easier for us and users to avoid licensing issues. Here are the resources, plugins and dependencies that are being used in different parts.
<a href="https://nextjs.org/"> - Next.js</a> 
<a href="https://vercel.com/"> - Vercel</a> 
<a href="https://react.dev"> - TypeScript</a> 
<a href="https://www.typescriptlang.org/"> - TypeScript</a> 
<a href="https://eslint.org/"> - ESLint</a> 
<a href="https://tailwindcss.com/"> - Tailwind CSS</a> 
<a href="http://nextjstemplates.com/templates"> - Next.js Templates</a> 
<a href="https://unsplash.com/"> - Unsplash</a> 
<a href="https://lineicons.com/"> - Lineicons</a> 
<a href="https://sanity.com/"> - Sanity</a> 
<a href="https://planetscale.com/"> - PlanetScale</a> 
<a href="https://stripe.com/"> - Stripe</a> 
<a href="https://www.prisma.io/"> - Prisma ORM</a> 
<a href="https://materialdesignicons.com/"> - MaterialdesignIcons</a>

Tools, assets and credits for next.js development workflow

Resources and Credits

Introduction

Authentication

Customizing Next.js Templates or Websites

Database Integration

Installing and Deploying Next.js Template to Server

Markdown Integration

Sanity Integration

Installing and Configuring Starter Templates

Stripe Integration