Vivaldi is a desktop and mobile web browser that lets users control every aspect of the interface, from themes to shortcuts, while blocking ads and trackers. It targets power users who need advanced tab management, built‑in email, calendar, and note tools. What sets Vivaldi apart is its deep customization and privacy focus: end‑to‑end sync, no data mining, and optional Proton VPN. Built‑in features like workspaces, tab tiling, and command chains give users a tailored browsing experience without third‑party extensions.