Firefox is a free and open-source web browser developed by the Mozilla Foundation. It is designed to provide users with a fast, secure, and customizable browsing experience. With features like tabbed browsing, a built-in search bar, and support for various extensions, Firefox allows users to tailor their online experience to their preferences. One of the key focuses of Firefox is user privacy. The browser includes tools to block trackers and enhance security while browsing the internet. Additionally, Firefox is available on multiple platforms, including Windows, macOS, Linux, and mobile devices, making it accessible to a wide range of users.