Whop is a marketplace and commerce platform where creators and small businesses sell digital products, memberships, software, and services. It provides store pages, checkout, and payment processing, plus payout rails that support bank transfers and crypto. Sellers can run subscriptions, manage access to purchased products, and use built-in affiliate tracking. Businesses can add modular features through the Whop App Store and integrate external experiences using Whop’s developer APIs and SDKs for authentication and payments.