I created a template for an SaaS/Admin webapp using React and Material-UI:

Features:

• Created with Create React App
• Features a landing page, a blog, an area to login/register and an admin-dashboard
• Fully routed using react-router
• Lazy loads components to boost performance
• Components for statistics, text with emoji support, image upload and much more...

https://github.com/dunky11/react-saas-template