Certainly! If you're seeking a sleek full-stack e-commerce platform built with ReactJS, here are some excellent open-source repositories you can explore:

1. E-commerce-Full-Stack by RajAditya01
Tech Stack: ReactJS, Next.js, TypeScript, Tailwind CSS, Supabase

Features: Comprehensive e-commerce functionalities including product listings, shopping cart, checkout process, and user authentication.

Demo: Live Demo

Repository: GitHub Repository

2. e-commerce-reactJS by leij11
Tech Stack: ReactJS, Node.js, Express, MongoDB, Stripe

Features: Full-stack e-commerce application with features like product management, user authentication, and payment integration.

Repository: GitHub Repository

3. Ecommerce-ReactJs by jkm243
Tech Stack: ReactJS, Express, MongoDB, Node.js

Features: E-commerce website with functionalities such as product browsing, shopping cart, and user authentication.

Repository: GitHub Repository

4. ProShop eCommerce by RameshMF
Tech Stack: React, Redux, Express, MongoDB

Features: Full-featured shopping cart, product reviews, admin panel, and PayPal/credit card integration.

Repository: GitHub Repository

5. Shopitel by AbihaFatima
Tech Stack: React, Redux, Express, MongoDB, Stripe

Features: E-commerce web application with product listings, shopping cart, and checkout process.

Repository: GitHub Repository

Feel free to explore these repositories to find the one that best fits your project requirements.