Stop opening what’s already open.
AlreadyOpen! notices when a page is already open and helps you return to it before another duplicate tab is created.
Try the real on-page experience. No extension needed.
We've all done this.
You're searching, clicking, jumping between tabs. Then suddenly you realize: did I already open this? Too late. Now you have 47 tabs open and can't remember which one is the original.
It's a tiny friction point. But it happens dozens of times a day.
This page is already open.
AlreadyOpen! steps in before it happens.
Exactly when you try to open a duplicate, a tiny popup appears. It takes a half-second and solves the problem before it exists.
No disruption. No learning curve. Just the right help at the right moment.
Choose once.
Ask every time
Get the popup every time. You decide in the moment.
Always switch
Jump to the existing tab automatically. No popups.
Always open another copy
Open duplicates without interruption. You're in control.
Change your preference anytime. AlreadyOpen! remembers what you choose.
Small feature. Big quality-of-life upgrade.
Built with the details in mind, so you don't have to think about it.
Smart duplicate detection
Ignores fragments and common tracking parameters when comparing pages.
Site exclusions
Exclude specific sites where you genuinely want multiple tabs.
Remember your choice
Your preferred duplicate behavior sticks until you change it.
Duplicate cleanup
See and close other copies of the page you're viewing.
Lightweight
Minimal memory footprint. Runs silently in the background.
Privacy-first
Zero data collection. Everything stays on your device.