Requestly

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Requestly is a developer tools company that specializes in HTTP request interception, API mocking, and testing solutions. Founded in 2021, it evolved from a simple Chrome extension launched in 2018 into a comprehensive platform designed to help frontend, backend, and QA teams work independently of backend dependencies. The company offers a suite of tools, including a lightweight Chrome extension, desktop app, and team workspaces, serving as an open-source alternative to traditional tools like Postman and Charles Proxy. Key features of Requestly include HTTP request interception and modification, API mocking, and built-in API testing capabilities. It supports cross-environment testing for web and mobile applications, facilitating seamless collaboration among developers, QA, and backend teams. With over 200,000 active installs and a strong user base that includes many Fortune 500 companies, Requestly is recognized for streamlining local development and debugging processes. The company is based in San Francisco and is a graduate of Y Combinator's W22 program.