Mono Tab — One Tab at a Time | Chrome Tab Manager for Focus

Q: Is Mono Tab free?

Focus Mode works immediately after install, no strings attached. To unlock Pro features like Smart Grouping, Pin Tabs, Quick Search, and History Search, just share Mono Tab with 2 friends. Help spread the word and you get everything, forever. You can also support the project with a small donation to unlock Pro instantly.

You have too many tabs open right now.

"I've got 47 tabs and can't find anything"

Each open tab is a tiny decision your brain has to track. Research from Carnegie Mellon shows tab overload drains working memory and tanks productivity. You're not browsing. You're juggling.

"I opened Chrome to do one thing..."

...and 40 minutes later you're reading about alpacas. Every tab is an invitation to context-switch. Each switch costs you 23 minutes of recovery time. That's not a productivity problem. It's an environment problem.

"Chrome is eating all my RAM"

Every open tab consumes memory, CPU, and battery. 30 tabs can use 4+ GB of RAM. Your laptop fans spin up. Everything slows down. And for what? Tabs you opened three days ago and forgot about.

Your browser needs a bouncer.

One active tab. Everything else parked.

Mono Tab is the simplest Chrome tab manager. Toggle it on and focus.

Toggle Focus Mode

One click in the side panel. Mono Tab instantly parks every tab except the one you're looking at.

Browse with calm

New tabs are intercepted and parked automatically. You stay on one page at a time. No clutter, no temptation.

Retrieve when ready

All your parked tabs are organized by date. Search, pin the important ones, or dismiss what you don't need.

Built for focus, not tab hoarding

Focus Mode that actually enforces

Other tab managers save your tabs. Mono Tab keeps you honest. When Focus Mode is on, only one tab stays open. New tabs from links, Ctrl+T, or the address bar are automatically parked. No willpower required.

Q4 Marketing Plan — Google Docs

FOCUS MODE ON · 5 TABS PARKED

Tabs organized by when you used them

No folders to configure. No categories to maintain. Parked tabs are automatically grouped into Today, Yesterday, This Week, and Older. Your most recent context is always at the top.

Today

Figma — Homepage redesign

Stripe Dashboard

Yesterday

GitHub — Pull request #142

This Week

Notion — Product roadmap

100% local. Zero trust required.

No accounts. No cloud sync. No telemetry. No analytics. Every byte of data stays in Chrome's local storage on your machine. You can verify it yourself: Mono Tab requests zero network permissions. After The Great Suspender debacle, we built what we'd trust ourselves.

Data stays on your device

✓ No servers · ✓ No accounts · ✓ No tracking

✓ No API keys · ✓ No analytics · ✓ Open source

Feature	Mono Tab	OneTab	Others
One-tab-at-a-time enforcement	✓	✗	✗
Auto-park new tabs	✓	✗	Some
Smart date grouping	✓	✗	Some
History integration	✓	✗	Some
100% local / no cloud	✓	✓	Varies
No account required	✓	✓	✗
Pin / favorite tabs	✓	✗	Some
Free to unlock (share or donate)	✓	✓	✗

What focused browsers are saying

"I used to have 60+ tabs open and feel guilty about it. Mono Tab removed the guilt by removing the tabs. Now I actually finish articles instead of collecting them."

Early beta user

"Finally an extension that doesn't just save my tabs — it stops me from hoarding them in the first place."

Developer
ADHD, self-diagnosed tab hoarder

"The privacy angle sold me. After The Great Suspender got flagged as malware, I don't trust extensions that phone home. Mono Tab stays local."

Security-conscious user

"I went from 'where was that tab?' 50 times a day to just... searching in the side panel. My laptop fan stopped running constantly."

Freelance designer

Questions? Answers.

How do I keep only one tab open in Chrome?

Install Mono Tab from the Chrome Web Store. When you toggle Focus Mode on, Mono Tab automatically parks all tabs except the one you're viewing. New tabs are intercepted and parked too. You browse one page at a time — everything else is saved for later.

Is Mono Tab safe? Does it collect my data?

Mono Tab is 100% local. Your tab data never leaves your browser — no external servers, no cloud sync, no accounts, no tracking, no analytics. All data is stored in Chrome's local storage on your device. You can verify this yourself: the extension requires zero network permissions.

How is Mono Tab different from OneTab?

OneTab collapses all your tabs into a list that you manage manually. Mono Tab enforces one-tab-at-a-time browsing — it actively keeps your browser focused by parking new tabs automatically. It also groups saved tabs by recency (Today, Yesterday, This Week), integrates your browsing history, and runs entirely locally with zero cloud dependency.

Will I lose my tabs if I close Chrome?

No. All parked tabs are persisted in Chrome's local storage. They survive browser restarts, crashes, and computer reboots. Your tabs are always there when you come back.

Does Mono Tab help with ADHD?

Many users with ADHD find Mono Tab helpful because it removes the visual overwhelm of multiple open tabs and enforces single-tasking. Instead of 40 tabs competing for your attention, you see one page. Everything else is parked and organized, ready when you need it. It's not a medical tool — but it changes the environment so your brain can focus on one thing.

Is Mono Tab free?

Focus Mode (the core feature) works immediately after install, no strings attached. To unlock Pro features like Smart Grouping, Pin Tabs, Quick Search, and History Search, just share Mono Tab with 2 friends. That's it. Help spread the word and you get everything, forever. If you'd rather skip the sharing, you can also support the project with a small donation.

Can I still open multiple tabs when I need to?

Yes. Focus Mode is a toggle. Turn it off when you need to research across multiple tabs. Turn it back on when you're ready to focus. You're in control — Mono Tab just makes single-tasking the default instead of the exception.

What permissions does Mono Tab need?

Four permissions: tabs (to read tab URLs and titles), storage (to save your parked tabs locally), sidePanel (for the UI), and history (to integrate recent browsing history). No network permissions. No access to page content. No "read and change all your data on all websites."

One tab. Total focus.