Tabbit vs Aside

We make Yab, the third column.facts checked Oct 9 ↓

Tabbit is a free Chromium AI browser for Mac and Windows from Lumina Lab in Singapore, with chat, an agent mode and a choice of many vendors’ models.

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 Tabbit

if you want a free agent browser with a wide choice of models, Chinese ones included
if you want the same AI browser on Windows and Mac
if you want Codex or Claude Code to use your signed-in sessions through its command line

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

Or 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

At a glance

Tabbit and Aside, with Yab beside them for a Mac.

Tabbit vs Aside
What	Tabbit	Aside	Yab
Made by	Lumina Lab (LUMINALAB PTE. LTD., Singapore)	Aside Computer Inc. (YC Fall 2025)	Serafim Korablev
Status	Updated	Updated	Updated
Runs on	Mac and Windows	Mac and Windows	Mac
Phone app	Only for its Chinese edition, in Chinese; tabbit.ai lists mobile as planned	None yet; an iPhone app is in the works. Pro runs its agent from Slack or Telegram	Not yet
Price	Free with a weekly AI allowance; Pro $30/month	Free with 500 AI credits a month; Pro $20/month; Max $200/month; or your own ChatGPT or Claude plan	Free; its AI runs on your own Claude or ChatGPT plan
AI	An agent that works in pages, on its own AI service	An agent that works in pages, on its own AI or yours	An agent that works in pages, on your Claude or ChatGPT plan
Driven by outside agents	a command line	MCP and a command line	MCP and a command line
Engine	Chromium	Chromium	WebKit
Tabs down the side	Yes	Yes	Yes
Spaces	Not stated	Yes	Yes
Split View	Yes	Yes	Yes
Extensions	Chrome Web Store	Chrome Web Store	Chrome Web Store
Ad blocker	Built in	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 an agent that works in your pages. Tabbit chats with your tabs, files and screenshots, and its agent mode runs multi-step tasks in tab groups of its own, on GPT, Claude, Gemini, DeepSeek, Kimi, Qwen or GLM. 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 CodexAside leads

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

Tabs and windowsAside leads

Tabbit has tabs down the side, Split View and folders in the sidebar. Aside has tabs down the side, spaces, Split View, folders in the sidebar and tabs that sleep.

Priceeven

Tabbit: Free with a weekly AI allowance; Pro $30/month. Aside: Free with 500 AI credits a month; Pro $20/month; Max $200/month; or your own ChatGPT or Claude plan.

Where it runseven

Both run on Mac and Windows. On a Mac, Tabbit needs macOS 13 or later and Aside needs macOS 15 or later. On the phone, Tabbit: only for its Chinese edition, in Chinese; tabbit.ai lists mobile as planned. 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

Both are built on Chromium, as Chrome is, so sites work as they do in Chrome. Both take extensions from the Chrome Web Store.

Privacyeven

Both have an ad blocker built in. Tabbit sends prompts and pages you share to the model vendor you pick, on servers in Singapore or your region; its maker says it doesn’t train on your data. 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.

What their pages don’t lead with

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

Tabbit

Top models and heavy agent use need Pro at $30 a month
The free AI is a weekly allowance, larger only if Tabbit is your default browser
No Linux or phone apps yet
No MCP server documented, only its command line

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 21, 2026Aside: Ad blocking with default filter lists turned on during setup
September 14, 2026Aside: Windows version officially available (release 1.0.914.1)
September 8, 2026Tabbit: Tabbit CLI lets coding agents drive the browser with your logins
August 21, 2026Tabbit: Version 1.11 dropped macOS 12; macOS 13 or later required
June 9, 2026Tabbit: Version 1.0 released after a 100-day public beta
February 25, 2026Aside: First Aside Browser release for macOS

Questions

Is Tabbit free?

Yes, with limits on its AI. Free with a weekly AI allowance; Pro $30/month.

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, Tabbit or Aside?

Both. Tabbit chats with your tabs, files and screenshots, and its agent mode runs multi-step tasks in tab groups of its own, on GPT, Claude, Gemini, DeepSeek, Kimi, Qwen or GLM. 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.

Do Tabbit and Aside run on Windows?

Yes, both. Tabbit runs on Mac and Windows; Aside on Mac and Windows.

Do Tabbit and Aside have phone apps?

On the phone, Tabbit: only for its Chinese edition, in Chinese; tabbit.ai lists mobile as planned. Aside has no phone app yet: an iPhone app is in the works. Pro runs its agent from Slack or Telegram.

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 Tabbit; an agent in your signed-in tabs like Tabbit’s, 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

Tabbit vs Dia Tabbit vs Comet Tabbit vs Atlas Tabbit vs Opera Neon Tabbit vs Chrome Tabbit vs Safari Tabbit vs Edge Tabbit alternatives Yab vs Tabbit Aside vs Dia Aside vs Comet Aside vs Atlas Aside vs Opera Neon Aside vs Chrome Aside vs Safari Aside vs Edge Aside alternatives Yab vs Aside

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 Aside Download