Arc browser will shut down in December as maker prioritizes Dia
The Browser Company will retire Arc on December 22, 2026, and move users to its AI-focused Dia browser. New Arc accounts are already blocked, Arc Search will lose AI features on November 23, and the Mac and Windows app will stop working on the shutdown date. The company cited the growing cost of browser security, while disappointed users asked for Arc to be open-sourced; the CEO said that would expose proprietary technology also used by Dia.
The Browser Company has already closed new Arc registrations. On November 23, Arc Search on mobile will drop AI tools such as Browse for Me and stop sign-in and tab syncing, though it will remain a basic local browser. The Mac and Windows app will then cease working on December 22, with accounts deactivated and personal data removed within 30 days.
Arc’s retreat follows a 2025 decision to halt active feature work; Atlassian bought the company that year for $610 million. Dia will inherit equivalents: Profiles replace Spaces, vertical tabs become optional, Folders become Pinned Tab Groups, and passwords, bookmarks, extensions, and history transfer. Arc features stay free in Dia, with AI optional.
Arc’s shutdown could disrupt devoted users, particularly designers, researchers, and others who built workflows around its unusual interface. The staged loss of mobile AI features and the desktop app may force migrations to Dia or rival browsers, while data-transfer promises could shape trust in small software makers. Because Dia is AI-first, users may weigh convenience against privacy, vendor dependence, and the durability of niche productivity tools.