Vivaldi 6.1 is a highly customizable web browser designed to empower tech-savvy users. The software offers unique and comprehensive options for personalizing the browsing experience, including customizing the design, tab and window interface, and even mouse and keyboard shortcuts. It stands out with its advanced tab management feature which allows users to group, tile, and pin tabs. The software also includes a built-in ad blocker and tracker blocker for enhanced user privacy. Additionally, Vivaldi supports Chrome extensions, which significantly expands its functionality.