Dia

Dia is the AI-first web browser from The Browser Company of New York, the team behind Arc. Where Arc reinvented tab management, Dia puts an assistant at the centre of the browser and points it at your working day: the chat can read across your open tabs and the work tools you connect, such as Slack, Notion, Google Workspace and Microsoft Teams, and answer with that context instead of a generic web search.

The work-focused features build on that context. A Morning Brief lays out your calendar, inbox and key links before the day starts; Better Meetings opens the right agenda, notes and related docs with a countdown before each call; Live Work surfaces the GitHub pull requests and Notion pages you are actively working on in the tab bar; and Decks turns scattered material into presentable slides. Profiles keep work, freelance and personal browsing apart with separate tabs, logins and AI memory, and Splits keep a meeting and a document side by side.

Dia is a free download for macOS and Windows. You choose whether it remembers your preferences and which tools it may connect to, the company says browsing data is never sold or used for ad profiles, and Sync is end-to-end encrypted. Dia for Work adds SSO and admin controls for teams. It entered beta on 11 June 2025.