Yab

Yab vs Aside

We make Yab, so read it as our side.facts checked Oct 9 ↓

Yab, Yet Another Browser, is a free Mac browser that keeps everything from Arc (tabs down the side, spaces, folders, Split View) and gives your Claude or ChatGPT plan an agent that works in your signed-in tabs.

Aside is an AI agent browser from a Y Combinator startup, on Chromium, for Mac and Windows. Its agent does multi-step work in the sites you are signed in to, on Aside’s own models or your ChatGPT or Claude plan.

The short answer

Pick Yabours
  • 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
Pick Aside
  • if you want an agent for multi-step work across your signed-in sites, on Mac or Windows
  • if you want a free plan with AI credits, or to bring your ChatGPT or Claude plan
  • if you want Claude Code or Codex to drive it over MCP or its command line

At a glance

Yab and Aside, side by side.

Yab vs Aside
WhatYabAside
Made bySerafim KorablevAside Computer Inc. (YC Fall 2025)
StatusUpdatedUpdated
Runs onMacMac and Windows
Phone appNot yetNone yet; an iPhone app is in the works. Pro runs its agent from Slack or Telegram
PriceFree; its AI runs on your own Claude or ChatGPT planFree with 500 AI credits a month; Pro $20/month; Max $200/month; or your own ChatGPT or Claude plan
AIAn agent that works in pages, on your Claude or ChatGPT planAn agent that works in pages, on its own AI or yours
Driven by outside agentsMCP and a command lineMCP and a command line
EngineWebKitChromium
Tabs down the sideYesYes
SpacesYesYes
Split ViewYesYes
ExtensionsChrome Web StoreChrome Web Store
Ad blockerBuilt inBuilt in
Open sourceNoNo

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 an agent that works in your pages. Yab’s agent works in tabs of its own beside yours, signed in as you, on your Claude or ChatGPT plan; Send, Pay and Delete wait for your yes. Aside’s agent runs multi-step tasks in your signed-in sites, signs in from its own password vault without seeing the passwords, and asks before payments, posts and messages.

Agents like Claude Code and Codexeven

Yab can be driven over MCP and a command line, through yab mcp and the yab command, for Claude Code, Codex, Cursor and any MCP client. Aside can be driven over MCP and a command line, through the aside command line, with aside mcp as its MCP server.

Tabs and windowseven

Both have tabs down the side, spaces, Split View, folders in the sidebar and tabs that sleep.

Priceeven

Yab: Free; its AI runs on your own Claude or ChatGPT plan. Aside: Free with 500 AI credits a month; Pro $20/month; Max $200/month; or your own ChatGPT or Claude plan.

Where it runsAside leads

Yab runs on Mac. Aside runs on Mac and Windows. On a Mac, Yab needs macOS 15.4 or later and Aside needs macOS 15 or later. Yab has no phone app yet. Aside has no phone app yet: an iPhone app is in the works. Pro runs its agent from Slack or Telegram.

Engine and extensionsa matter of taste

Yab is built on WebKit, the engine Safari uses; Aside on Chromium, as Chrome is. Both take extensions from the Chrome Web Store.

Privacyeven

Both have an ad blocker built in. Yab has no account and no server of ours between you and your sites; what your agent reads goes to Anthropic or OpenAI under your account. Aside keeps task transcripts and files on your Mac; model providers get the prompts, page snapshots and screenshots a task needs, and analytics sharing is on by default.

Where Aside is better

Aside comes out ahead on where it runs. It is also the better pick if you:

  • Want an agent for multi-step work across your signed-in sites, on Mac or Windows
  • Want a free plan with AI credits, or to bring your ChatGPT or Claude plan
  • Want Claude Code or Codex to drive it over MCP or its command line

The catch with each

Real limits, from the makers’ own words and our own use.

Aside

  • The free plan has 500 AI credits a month; more is Pro at $20 or Max at $200
  • Mac (macOS 15 or later) and Windows only, no phone apps
  • Young: first released in February 2026, on Windows since September 2026
  • Agents may use your saved passwords unless you change the default

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

  • September 25, 2026Yab: First release
  • September 21, 2026Aside: Ad blocking with default filter lists turned on during setup
  • September 14, 2026Aside: Windows version officially available (release 1.0.914.1)
  • February 25, 2026Aside: First Aside Browser release for macOS

Moving from Aside to Yab

Yab brings Aside’s tabs, passwords, bookmarks, history, extensions and sign-ins, and its memory notes and finished chats. It reads Aside’s files on your Mac; nothing goes through a server, and Aside stays as it was.

How to move from AsideBringing in, in the Manual

Questions

Is Yab free?

Yes. Free; its AI runs on your own Claude or ChatGPT plan.

Is Aside free?

Yes, with limits on its AI. Free with 500 AI credits a month; Pro $20/month; Max $200/month; or your own ChatGPT or Claude plan.

Which has an AI agent, Yab or Aside?

Both. Yab’s agent works in tabs of its own beside yours, signed in as you, on your Claude or ChatGPT plan; Send, Pay and Delete wait for your yes. Aside’s agent runs multi-step tasks in your signed-in sites, signs in from its own password vault without seeing the passwords, and asks before payments, posts and messages.

Which runs on Windows, Yab or Aside?

Aside does. Yab runs on Mac.

Do Yab and Aside have phone apps?

Yab has no phone app yet. Aside has no phone app yet: an iPhone app is in the works. Pro runs its agent from Slack or Telegram.

Can I move from Aside to Yab?

Yes. Yab brings Aside’s tabs, passwords, bookmarks, history, extensions and sign-ins, and its memory notes and finished chats.

More comparisons

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Sources, read October 9, 2026. Something out of date? Write to hello@serafimlabs.io and we fix it.

Yab, Yet Another Browser.

Free for the Mac. Arc’s sidebar, your own Claude or ChatGPT as the agent, Chrome extensions on WebKit.

it’s freeMove from AsideDownload