Catch duplicate tabs and return to the page you already have open.
Users
5
+1 in 30 days
Rating
0.0 / 5
unchanged in 30 days
Ratings
0
0 in 30 days
Store rank
#267K
#222K among extensions
Version
0.1.0
updated 12 Aug 2026
Users
monthly, 2 months
Latest, 18 Oct 2026:5 usersMove the mouse over the chart for any month
Ratings count
monthly, 2 months
Latest, 18 Oct 2026:0 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About AlreadyOpen!
AlreadyOpen! catches duplicate tabs before they pile up. When a page is already
open, the extension helps you return to the existing tab or continue with
another copy—it is always your choice.
Key features:
- Detect duplicate HTTP and HTTPS pages across open browser windows.
- Compare normalized URLs while ignoring fragments and common tracking
parameters.
- Ask every time, automatically switch, or always allow another copy.
- Exclude websites where you intentionally keep multiple tabs open.
- Inspect the current page from the toolbar, jump to an existing copy, or close
the other copies.
- Remember your preferred behavior through Chrome extension storage.
AlreadyOpen! processes tab addresses locally in Chrome. Browsing history and
page content are not sent to whyThough, sold, or used for advertising.
Small feature. Big quality-of-life upgrade.