There can be only ONE! Never accidentally open more than one Pandora/GMail/etc tab again. Instead, bring existing tabs to the front!
Only One helps you keep unnecessary tabs to a minimum by bringing an existing tab to the front when you navigate to a website you already have open.
If you're tired of finding you've just opened up a new GMail/Pandora/Reddit tab when you already have one open somewhere else, Only One can help.
Try it out! Go to "pandora.com" and click on the "1" in the top-right corner. It turns yellow to indicate that Only One is active for this URL. Now if you open another tab and type "pandora.com" in the address bar, Only One will bring your existing Pandora window to the front!
Just activate it once for every website you don't need more than one window of and then forget about it. Only One takes care of the rest! Only One's saves your preferences across browser sessions.
If you later find you want more than one tab of the same website, just click the "1" icon again and Only One won't watch that URL anymore.
*Note: no data from the extension is sent back to a server or leaves your computer in any way
Please send all support requests and questions to firstname.lastname@example.org
Also check out my other extension:
Log Me Out - Instantly log out of all your accounts with one click.
Special thanks to Ramon Aclo for the UI elements.