Replay

Replay is a professional software development tool designed for debugging applications through time-travel capabilities. By capturing a recording of an application's execution, developers can inspect the state, network requests, and code execution at any point in time accurately. This innovation eliminates the need for manual reproduction of software bugs, specifically targeting flaky tests in environments like Cypress and Playwright.

The product was developed by a team of software engineers based in San Francisco, California. It emerged as a solution to modernize the traditional browser developer tools by providing a collaborative platform where developers can share recordings and leave comments directly on the code timeline, effectively bridging the gap between local development and production debugging.