Arc Browser to Cease Operations by 2026, Shifts Focus to AI Browser Dia

ChainCatcher reports: The Browser Company has announced that it will completely shut down the macOS and Windows versions of the Arc browser on December 22, 2026, and has already closed new user registrations. Starting November 23, AI features, login functionality, and tab synchronization on mobile devices will be gradually discontinued. The team will now fully focus on the AI browser Dia. Arc was launched in 2022, initially available only to Mac users via invitation; it opened to the public in 2023 and expanded to Windows and mobile platforms in 2024. The product featured a vertical tab bar, isolated workspaces, automatic tab organization, split-screen browsing, and the ability for users to directly modify webpage appearances. The company previously disclosed that Arc had over one million weekly active users. Founder Josh Miller stated in 2025 that Arc was too complex and had too high a learning curve for average users, with only 5.52% of daily active users frequently utilizing multiple workspaces. Development of new features was halted that year in favor of Dia. In October of the same year, the parent company was acquired by Atlassian for approximately $610 million. The shutdown is justified by the need for continuous investment in browser security in the AI era, requiring engineering and security resources to be consolidated into Dia.