YabArc is The Browser Company’s Chromium browser for Mac and Windows that put tabs down the side, with spaces, folders and Split View. It has had no new features since May 2025; it still gets security fixes, and its makers point people to Dia.
Opera One is Opera’s free Chromium browser on every desktop and phone, with a free browser VPN, an ad blocker, messengers in the sidebar and Opera AI. Its agents are in a separate browser, Opera Neon.
The short answer
- if you use it today and want its sidebar, spaces and Split View exactly as they are
- if you want a free browser with no paid AI plans
- if you need the same layout on Windows
- if you want a free browser VPN and an ad blocker built in
- if you keep WhatsApp, Telegram or Slack open in a sidebar
- if you sort work into workspaces, Tab Islands and split screen
- if you miss Arc and want spaces, pins and folders kept, on a Mac
- if you already pay for Claude or ChatGPT and want it to work in your signed-in tabs
- if you want Claude Code, Codex or Cursor to drive a real browser over MCP
At a glance
Arc and Opera, with Yab beside them for a Mac.
| What | Arc | Opera | Yab |
|---|---|---|---|
| Made by | The Browser Company (Atlassian) | Opera | Serafim Korablev |
| Status | Security fixes only | Updated | Updated |
| Runs on | Mac and Windows | Mac, Windows, Linux, iPhone and Android | Mac |
| Phone app | Arc Search on iPhone, iPad and Android; on iPhone it shows your desktop spaces and pins | iPhone, iPad and Android; syncs tabs, bookmarks and Speed Dials with an Opera account | Not yet |
| Price | Free; its Arc Max AI helpers are free too | Free, with Opera AI and a browser VPN; VPN Pro is paid | Free; its AI runs on your own Claude or ChatGPT plan |
| AI | Chat about pages, on its own AI service | Chat about pages, on its own AI service | An agent that works in pages, on your Claude or ChatGPT plan |
| Driven by outside agents | No | MCP | MCP and a command line |
| Engine | Chromium | Chromium | WebKit |
| Tabs down the side | Yes | A setting | Yes |
| Spaces | Yes | Yes | Yes |
| Split View | Yes | Yes | Yes |
| Extensions | Chrome Web Store | Chrome Web Store | Chrome Web Store |
| Ad blocker | No | Built in | Built in |
| Open source | No | No | No |
Checked October 9, 2026 on each maker’s own pages, linked under Sources. Prices are per month, in US dollars.
Where they differ
What separates them, area by area. Where one plainly has more, it says who; where it comes down to taste, it says so.
AIa matter of taste
Both have AI to ask about pages, and neither does the clicking for you. Arc Max helpers tidy tab titles and downloads, preview links and put ChatGPT in the command bar; Ask on Page was removed in August 2025, and there is no agent. Opera AI answers about the page, Tab Islands, videos and files, and makes images, with no account; it doesn’t click or fill forms.
Agents like Claude Code and CodexOpera leads
Arc has no MCP server or command line for outside agents. Opera can be driven over MCP, through Browser Connector, in early testing, which lets ChatGPT or Claude read and open tabs but not click or type.
Tabs and windowsArc leads
Arc has tabs down the side, spaces, Split View, folders in the sidebar and tabs that sleep. Opera has tabs down the side as a setting, spaces, Split View, folders in the sidebar and tabs that sleep.
Priceeven
Arc: Free; its Arc Max AI helpers are free too. Opera: Free, with Opera AI and a browser VPN; VPN Pro is paid.
Where it runsOpera leads
Arc runs on Mac and Windows. Opera runs on Mac, Windows, Linux, iPhone and Android. On a Mac, Arc needs macOS 13 or later. On the phone, Arc: Arc Search on iPhone, iPad and Android; on iPhone it shows your desktop spaces and pins. On the phone, Opera: iPhone, iPad and Android; syncs tabs, bookmarks and Speed Dials with an Opera account.
Engine and extensionsa matter of taste
Both are built on Chromium, as Chrome is, so sites work as they do in Chrome. Both take extensions from the Chrome Web Store.
PrivacyOpera leads
Arc has no ad blocker of its own. Arc needs an account; The Browser Company says it doesn’t see which sites you visit, and Arc Max sends page data to OpenAI and Anthropic. Opera has an ad blocker built in and a VPN. Opera AI sends only the current page or Tab Island when you write with page access on; Opera says it doesn’t send your history.
UpdatesOpera leads
Arc: No new features since May 2025; Chromium security updates still come, the latest on October 8, 2026. Opera is updated as usual.
What their pages don’t lead with
Real limits, from the makers’ own words and our own use.
Arc
- No new features since May 2025, only security updates
- Needs an Arc account
- No ad blocker of its own
- On phones, Arc Search is a separate search app
Opera
- Opera AI only chats and sums up; agents need Opera Neon at $19.90 a month
- The free VPN covers the browser only, with three locations
- The ad blocker is off until you turn it on
- Browser Connector is in early testing and needs an Opera account
Yab, honestly
- Mac only: macOS 15.4 or later, no Windows, iPhone or Android
- New: first released in September 2026
- Its AI needs a Claude or ChatGPT plan; ChatGPT’s free plan may work with low limits
- WebKit, as in Safari: a site tested only in Chrome can misbehave
- Closed source
What changed lately
- July 23, 2026Opera: Vertical tabs shipped to all Opera One users
- April 16, 2026Opera: Browser Connector lets ChatGPT and Claude read your tabs over MCP (Early Bird)
- December 11, 2025Opera: Opera AI replaced Aria in Opera One, GX and Air
- October 21, 2025Arc: Atlassian completed its purchase of The Browser Company
- August 28, 2025Arc: Ask On Page removed from Arc Max
- May 26, 2025Arc: The Browser Company stopped feature work on Arc to focus on Dia
Questions
Is Arc free?
Yes. Free; its Arc Max AI helpers are free too.
Is Opera free?
Yes. Free, with Opera AI and a browser VPN; VPN Pro is paid.
Which has an AI agent, Arc or Opera?
Neither has an agent that does tasks in your pages. Arc Max helpers tidy tab titles and downloads, preview links and put ChatGPT in the command bar; Ask on Page was removed in August 2025, and there is no agent. Opera AI answers about the page, Tab Islands, videos and files, and makes images, with no account; it doesn’t click or fill forms.
Do Arc and Opera run on Windows?
Yes, both. Arc runs on Mac and Windows; Opera on Mac, Windows, Linux, iPhone and Android.
Do Arc and Opera have phone apps?
On the phone, Arc: Arc Search on iPhone, iPad and Android; on iPhone it shows your desktop spaces and pins. On the phone, Opera: iPhone, iPad and Android; syncs tabs, bookmarks and Speed Dials with an Opera account.
Can I move from Opera to Arc?
Yes: Arc’s own help says it brings in from Opera.
Is Arc still being updated?
No new features since May 2025; Chromium security updates still come, the latest on October 8, 2026.
Is there a third option on a Mac?
Yab, Yet Another Browser, is free for the Mac: tabs down the side with spaces, folders and Split View, as in Arc; an agent that works in your signed-in tabs, on the Claude or ChatGPT plan you already pay for. Claude Code, Codex and any MCP client can drive it too. It runs on WebKit, the engine Safari uses, and takes Chrome extensions. It is Mac only, and new.
More comparisons
- Arc home page (Chromium updates only, Mac and Windows downloads)
- Letter to Arc members, 2025-05-26
- Arc for macOS release notes
- Arc for Windows release notes
- Arc macOS update feed (minimum macOS 13.0; universal binary)
- Arc unsupported devices
- Arc Max help article
- Arc import help article
- Arc ad blocking and Manifest V3
- Arc saved passwords
- Why Arc needs an account
- Arc Spaces
- Arc Split View
- Arc Folders
- Arc Search for iOS and Android
- Arc Search on the App Store (1.48.0, 2026-08-12)
- Arc Search for Android release notes
- Arc privacy policy
- Atlassian completes acquisition of The Browser Company (Business Wire)
- Arc Help: Arc Sync (what syncs, not on Android)
- Google Play: Arc Search (updated Sep 1, 2026)
- Arc Help: Arc Search for iOS release notes (iPad layout, June 20, 2024)
- TidBITS: Arc Search iPhone app now syncs Arc sidebar tabs (2024-04-29)
- Opera blog: Opera AI comes to Opera One, GX and Air
- Opera AI feature page
- Opera blog: Browser Connector
- Opera press: Browser Connector (2026-04-16)
- Opera blog: Opera 133 stable, vertical tabs (2026-07-23)
- Opera blog: how vertical tabs work
- Opera blog: Opera One R3
- Opera blog: new native ad blocker (2026-05-14)
- Opera free VPN page
- Opera Workspaces page (split screen, messengers)
- Opera Help: features (tab snoozing, messengers, workspaces)
- Opera Help: security and privacy (ad blocker, VPN)
- Opera Help: Password Manager
- Opera Help: import browsing data
- Opera Help FAQ: Chrome Web Store extensions
- Opera system requirements
- Opera Neon subscription
- Opera blog: Neon free plan for outside agents (2026-08-14)
- Opera blog: Opera One for iOS brings full synchronization (Jul 9, 2026)
- Opera: Sync your Opera browsers
- Opera: Flow / My Flow
- Opera Help (iOS): Connect your computer and phone with Flow
- Opera Browser with VPN on the App Store (iPhone and iPad)
- Opera: Private Web Browser on Google Play
- Yab Manual: Bringing in from another browser
- Yab Manual: Connecting Claude or ChatGPT
- Yab Manual: Extensions
- Yab Manual: Yab’s tools over MCP
- Yab Manual: Privacy
Yab, Yet Another Browser.
Free for the Mac. Arc’s sidebar, your own Claude or ChatGPT as the agent, Chrome extensions on WebKit.