The source is a product page for Limitless, an AI-powered productivity tool, on the website Product Hunt. The page provides an overview of the product, including user reviews, features, and the company's vision. The reviews praise Limitless for its ability to enhance memory and focus, allowing users to search through their digital activity and recall past information easily. Limitless is described as a web, Mac, and Windows app, as well as a wearable device, showcasing its commitment to accessibility across platforms.

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