The author has switched from traditional browsers like Google Chrome and Safari to a new web browser called Arc, which offers a bold, new design that tackles the problem of tab overload. The browser's interface is well-thought-out, addressing common pain points such as tab management and multitasking. It features a sidebar with pinned favorites, saved bookmarks, and temporary tabs that archive when not used. The browser also includes "Spaces," workspaces that can have their own sets of pinned tabs and bookmarks, making it easier to manage multiple tabs without cluttering the interface. Additionally, Arc's design is minimalistic, customizable, and highly approachable, with a focus on streamlining the browsing experience. However, the author notes that the browser is currently limited to Mac and does not support Windows or iOS devices, although a beta version for Windows is planned.