Rectangle - Single Checkout for the Web – AI-powered multi-retailer shopping with unified cart

Summary: Rectangle enables shopping across multiple retailers like Amazon, Best Buy, Newegg, and Walmart with a single cart and checkout. It integrates AI to assist product discovery, recommendations, and PC build configuration based on budget and purpose.

What it does

Rectangle aggregates products from various retailers into one cart, allowing users to compare prices and checkout once. Its AI-powered Builder Studio helps users configure PC builds by selecting parts from live inventory according to specified budgets and use cases.

Who it's for

It is designed for tech shoppers and PC builders seeking to streamline multi-retailer purchases and product discovery without switching tabs.

Why it matters

Rectangle addresses the complexity of online tech shopping by consolidating product search, comparison, and checkout into a single, AI-assisted platform.