Dia

Dia is a macOS and Windows browser with an assistant woven into the tab bar. It builds a Morning Brief, answers questions across connected tools such as GSuite, Slack, Notion and Teams, drafts shareable reports and slides, and separates work and personal profiles with configurable privacy controls.

Dia is a desktop browser built around a simple observation: most knowledge work is scattered across tabs, chat threads and documents, and the browser is where all of it ends up. Instead of adding another app to the stack, Dia puts an assistant inside the browser itself so it can draw on what is already open, plus the connected tools behind those tabs. It is aimed at people whose day is a loop of Slack, Notion, Teams, email and shared docs, and who lose time reconstructing context rather than doing the work. In practice the assistant shows up in a few recurring moments. A Morning Brief assembles calendar, inbox and key links before the day starts. Asking a question once lets Dia search across GSuite, Teams, Slack, Notion, open tabs and other sources, then return a synthesized answer or a report that can be shared. There is also a creative output path: request a deck and scattered context becomes slides with headers, layout and a presentable flow, which is why the tool suits people producing internal documents as much as people reading them. The browser layer carries as much weight as the AI. Profiles separate work, freelance and personal sessions with distinct tabs, logins and AI context, switched with a swipe. Live Work surfaces destinations like GitHub and Notion in the tab bar so a single click lands on the right pull request, spec or draft. Splits remember layouts for recurring meetings, and tab grouping renames related pages into recognizable clusters. Privacy settings let you decide whether memory and personalization stay on, whether trackers and ads are blocked, and whether content data is shared, with end to end encryption for Sync and SSO plus admin controls on the work tier. Against standalone AI assistants, Dia's advantage is that context collection is the product rather than an afterthought. Against a standard browser with an extension bolted on, the difference is memory and orchestration across sources. The tradeoff is that Dia is a full browser commitment on macOS and Windows, and access currently runs through a waitlist.