Office Sidekick

Office Sidekick is a single-page hub of 18 small productivity tools — focus timers, scratchpads, world clocks, currency conversion, weather, markdown editors, password generators, regex testers, unit converters, and more. Every tool runs entirely in your browser. There is no account, no telemetry, and no server-side storage of your session data. Close the tab and it's gone. Built around a customizable dashboard with pinning, widgets, and a ⌘K command palette so you can jump to any tool in two keystrokes.