Many web browsers were designed with casual or non-technical users in mind. Not so with the Vivaldi browser, which was designed to meet the needs of both heavy internet users and technical users. For example, it includes a bookmark manager built to easily sort and organize thousands of bookmarks. It also has support for mouse gestures for faster navigation. Vivaldi's tabbed browsing support includes a number of unique features. Tabs can be organized into 'stacks.' Multiple tabs can be tiled in a single window. Users who keep large numbers of tabs open may also appreciate Vivaldi's ability to place tabs in 'hibernation' to minimize their resource use. Under the hood, Vivaldi uses the same Blink rendering engine that Google Chrome does. Because of this, Vivaldi is compatible with Chrome extensions. Vivaldi is available for Windows, macOS, and Linux.