CookieSwap is a Firefox extension designed for users who manage multiple web accounts. It simplifies the process of switching between different logins, such as Gmail, Facebook, and Yahoo! Mail, by allowing users to create and manage multiple profiles. This innovative tool effectively 'swaps' the cookies associated with these profiles, ensuring seamless access to various accounts without the hassle of logging in and out repeatedly.

In addition to its primary functionality, CookieSwap offers a comprehensive cookie manager that enables users to view, add, edit, and delete cookies as needed. It supports exporting cookies in the standard Netscape format as well as in JSON format, making it versatile for different user needs. This extension is particularly beneficial for developers and IT professionals who require efficient account management while working on web projects.