Yab (Yet Another Browser)
Free Arc-style Mac browser on WebKit, with an agent that runs on your own Claude or ChatGPT plan.
Yab is a closed-source Mac browser by Serafim Korablev that follows Arc's design: a sidebar with pinned and kept tabs, folders, spaces, Peek and Split View. The stable download (0.45.2) runs on WebKit only; the 0.46 Nightly builds, from 3 November 2026, add an optional Chromium engine on Apple silicon. It has no model of its own: its agent works in tabs signed in as you, using your Claude or ChatGPT plan, and outside agents such as Claude Code can drive it over MCP. The first release was on 2026-09-26; an iPhone beta and an Android alpha sync with the Mac app.
88% Arc feature parity (yes = 1, partial = ½).
Built-in AI
AI optional
Agent, ⌘J chat and tasks need your Claude or ChatGPT plan; welcome step offers "Later". Short names for kept tabs are made on-device without setup.
yetanotherbrowser.comNot counted in Arc parity: some people want AI, some avoid it.
Bloat check
1 thing you didn't ask for
- Telemetry on by defaultDaily activity ping with random install and user IDs, no pages or searches; opt out in Settings › About, Share daily activity.yetanotherbrowser.com
No ads, wallet, feed, upsell or account found in the docs (app not run). Crash reports, Sync and Mail read statuses are off until you turn them on.
Ads, crypto, paid upsells, news feeds, default-on telemetry, required accounts.
Organization
| Feature | Yab (Yet Another Browser) | Arc | Note |
|---|---|---|---|
| Vertical sidebarTabs live in a vertical sidebar that is the main tab UI and can be hidden. | ✓ | ✓ | yetanotherbrowser.com |
| SpacesSeveral workspaces per window, each with its own pinned and open tabs, switched by swipe or shortcut. | ✓ | ✓ | Off by default; turn on in Settings › Spaces.yetanotherbrowser.com |
| Profiles per Space (shareable)Each Space can use its own browser profile (separate cookies, logins, history), and one profile can be shared by several Spaces. | ◐ | ✓ | Bundle 0.45.2: a space shares the common sign-ins or has separate cookies and extensions; no second shared set found.8hauzhgbhxiipn9a.public.blob.vercel-storage.com |
| Global favoritesPinned icons at the top of the sidebar shared by every Space (Zen calls them Essentials). | ✓ | ✓ | Pins show in every space that shares sign-ins; spaces with their own sign-ins keep their own pins.yetanotherbrowser.com |
| Pinned tabs & foldersPer-space pinned tabs that act like bookmarks, with nested folders. | ✓ | ✓ | Pins plus kept tabs above a line, with nested folders up to five deep.yetanotherbrowser.com |
| Auto-archive tabsUnpinned tabs close automatically after a set time and stay recoverable in an archive. | ◐ | ✓ | Unused today's tabs close after 12h to a month, with Undo and reopen; no browsable archive.yetanotherbrowser.com |
| Space themesPer-space colour or gradient themes. | ✓ | ✓ | Each space has its own color, gradient and grain.yetanotherbrowser.com |
Browsing
| Feature | Yab (Yet Another Browser) | Arc | Note |
|---|---|---|---|
| Split ViewTwo or more tabs side by side in one window. | ◐ | ✓ | Documented as any two tabs side by side; more than two is not described.yetanotherbrowser.com |
| Link previewOpen a link in an overlay without leaving the current page (Zen calls it Glance). | ✓ | ✓ | yetanotherbrowser.com |
| Mini windowA small, chrome-less window for links opened from other apps or a quick search. | ✓ | ✓ | Links from other apps open in a small window by default.yetanotherbrowser.com |
| Command barA ⌘T palette that searches tabs, history, bookmarks and browser commands. | ✓ | ✓ | yetanotherbrowser.com |
| Link routingRules that send links from other apps to a chosen space or profile. | ✓ | ✓ | Per-site rules in Settings › Spaces send links from other apps to a chosen space.yetanotherbrowser.com |
| Site customizationPer-site custom CSS/JS, or zapping elements off a page. | ✓ | ✓ | Boosts (CSS, or scripts via plugins), a Store, and Hide Element; agent can write them.yetanotherbrowser.com |
| Auto picture-in-picturePlaying video pops out into picture-in-picture automatically when you switch tabs. | ✓ | ✓ | Bundle 0.45.2: Settings › Tabs 'Picture in Picture automatically' floats video on leaving the tab or Yab.8hauzhgbhxiipn9a.public.blob.vercel-storage.com |
Compatibility & migration
| Feature | Yab (Yet Another Browser) | Arc | Note |
|---|---|---|---|
| Arc importImports Arc spaces, pinned tabs and folders. | ✓ | – | Bundle 0.45.2: reads Arc's StorableSidebar.json and StorableProfileContainers.json, and imports Arc boosts.8hauzhgbhxiipn9a.public.blob.vercel-storage.com |
| Chrome extensionsInstalls extensions from the Chrome Web Store. | ✓ | ✓ | Bundle 0.45.2: WKWebExtension runtime plus an injected 'Add to Yab' button on the Chrome Web Store; some APIs emulated.8hauzhgbhxiipn9a.public.blob.vercel-storage.com |
| DRM (Widevine)Netflix, Disney+, Spotify web and other DRM video/audio play. Chromium forks need a Google Widevine licence. | ◐ | ✓ | Bundle 0.46.32: Chromium tabs ship no Widevine CDM; Netflix, Disney+, Prime Video, Apple TV go to WebKit.8hauzhgbhxiipn9a.public.blob.vercel-storage.com |
| PasskeysWebAuthn passkeys, Touch ID and the system/iCloud keychain. | ✓ | ✓ | Bundle 0.45.2: signed with Apple's web-browser public-key-credential entitlement, so WebAuthn passkeys can run.8hauzhgbhxiipn9a.public.blob.vercel-storage.com |
| SyncSpaces, pinned tabs and settings sync across devices. | ✓ | ✓ | End-to-end encrypted: spaces, tabs, bookmarks, settings, passwords; no account needed.yetanotherbrowser.com |
| Mobile appiPhone, iPad or Android app that shares spaces with desktop. | ◐ | ◐ | iPhone public beta (TestFlight) syncs spaces and tabs; Android is alpha.yetanotherbrowser.com |
Extras
| Feature | Yab (Yet Another Browser) | Arc | Note |
|---|---|---|---|
| Built-in ad blockerAd and tracker blocking without installing an extension. | ✓ | ✓ | Bundle 0.45.2: uBlock Origin uAssets plus EasyList/EasyPrivacy lists, custom lists allowed; on by default per manual.8hauzhgbhxiipn9a.public.blob.vercel-storage.com |
Extension support
Which extension formats and stores run, beyond the Chrome Web Store row above. Not counted in Arc parity.
| Feature | Yab (Yet Another Browser) | Arc | Note |
|---|---|---|---|
| Manifest V2 extensionsThe older extension format Chrome removed in 2025. Needed for full uBlock Origin and other extensions that block requests. | ◐ | ✕ | Stable runs extensions on WebKit, which loads MV2 but has no blocking webRequest; no emulation found.developer.apple.com |
| Manifest V3 extensionsThe current extension format used by the Chrome Web Store (and supported by Firefox and Safari). | ✓ | ✓ | Runs on WebKit's extension engine (macOS 15.4+); Yab fills in APIs WebKit lacks, such as history.yetanotherbrowser.com |
| Firefox add-onsAdd-ons from addons.mozilla.org or .xpi files install and run. | ✕ | ✕ | Extensions come from the Chrome Web Store, other browsers' Chrome-style lists, or an unpacked folder.yetanotherbrowser.com |
| Safari extensionsSafari web extensions (the App Store extension apps Safari uses) install and run. | ✕ | ✕ | Uses Safari's extension engine, but installs only Chrome Web Store, imported or unpacked extensions.yetanotherbrowser.com |