Side Browser is a browser extension available for Chrome and Firefox that enhances multitasking by allowing users to open a side panel to browse the web while working on other tasks. With Side Browser, users can access websites in a convenient sidebar without having to switch tabs constantly.

This extension offers features such as browsing webpages in the sidebar, support for entering URLs directly, remembering the last visited webpage, opening bookmarks, and the ability to open unsupported websites in a new window. The recent update, version 1.0.4, addressed issues related to opening certain websites in iframes, ensuring a smoother browsing experience for users.