Rectangle - Single Checkout for the Web
Your AI-powered shopping agent. You decide, we execute.
What it does
Rectangle is the first place where you can shop at multiple retailers like Amazon, Best Buy, Newegg, Walmart, and more. No switching tabs or losing track. We add AI on top: chat to find products, get recommendations, and use our Builder Studio to spec a full PC (CPU, GPU, RAM, etc.) with a budget and purpose in mind. Pick parts from live search results, add them to your build, and checkout once. One cart, one checkout. You decide, we execute.
Does the same job
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Rectangle Shopping + KitsApr 2026 · rectangle.so · ▲3Shop Across the Internet with One Cart, One Checkout
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