Dia is a browser designed for professionals who want a streamlined work experience on macOS and Windows. It pulls together calendar, inbox, and key links into a Morning Brief, and lets users ask for reports that synthesize data from Slack, Notion, Teams, GSuite, GitHub, and more. What sets Dia apart is its focus on context and privacy. It groups tabs by work, freelance, or personal life, remembers layouts for recurring meetings, and offers AI‑powered synthesis that produces ready‑to‑share slides or documents—all while keeping data private and encrypted.