Arc vs Opera in 2026

Arc and Opera both reject the idea that a browser should be a tab strip and an address bar, but they are reacting to different problems. Arc is trying to fix how you organise work. Opera is trying to fix how much software you need open at once.

Two ways to rethink the window

Arc replaces the tab strip entirely. Tabs live in a collapsible left sidebar, grouped into Spaces — separate environments for work, personal, a specific project — each with its own tabs, bookmarks and theme. Tabs you stop using expire on their own, so the list stays short instead of collapsing into unreadable slivers. Split view and a keyboard-driven command bar are built in. For people who hold several contexts at once, this is a genuine structural improvement rather than decoration.

Opera keeps a conventional layout and adds to the edges. Its sidebar pins WhatsApp, Telegram and Instagram beside the page, and includes an AI assistant, workspaces and split-screen browsing. Its distinctive advantage is a free VPN, which Arc has no equivalent for at any price. Opera also ships a built-in ad blocker; Arc blocks ads and trackers too, so on that front they are level, though neither approaches Brave.

Platform support and project health

Platform support is the practical dividing line and it is not close. Opera runs on Mac, Windows, Linux, iOS and Android. Arc runs on Mac and Windows only, with no Linux build and only a companion app on mobile. If you want the same browser on your phone and your laptop, Opera can do that and Arc cannot.

Then there is Arc's future, which has run out. The Browser Company moved its team to Dia, its newer AI-first browser, in 2025, and in October 2026 it closed new Arc sign-ups and announced that the app stops working on December 22, 2026.

Privacy is a wash — Arc scores 3, Opera 3 — and neither is the right answer if that is your priority.

Which should you choose?

Arc is no longer a choice to make: it stops working on December 22, 2026. If it was the Spaces model you valued, Dia, Zen Browser and Vivaldi are where to look next; Opera's workspaces are a lighter version of the same idea.

Choose Opera if you need Linux or mobile, want a free VPN, or like having messaging pinned beside your browsing. It is the one of the two that will still be running next year.