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I don't need this extension anymore because Safari 9 has this feature built-in, but I can't find it anywhere to disable or remove it. It's not listed in my Preferences -> Extensions. I looked through my ~/Library/Safari/Extensions but it's not listed there either.

How do I remove this extension so that I don't get this annoying popup every time I launch Safari?

1 Answer 1


Generally, Safari plugins should be in /Library/Internet Plug-ins/

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However, I discovered SafariTabSwitching is actually in a different location

Source : Safari Tab Switching FAQ

How to uninstall?
Remove this file: /Library/Application Support/SIMBL/Plugins/SafariOmnibar.bundle
Alternatively you may download this uninstaller and run it. Note that uninstaller won't remove SIMBL Agent as you may use some other SIMBL plugin and we don't want to break them.

  • I don't see anything similar to SafariTabSwitching in "/Library/Internet Plug-Ins/Disabled Plugins" or in "/Users/kenny/Library/Internet Plug-Ins/Disabled Plugins". I also recursively grepped the entire /Library and ~/Library trees for the text SafariTabSwitching. Commented Dec 1, 2015 at 21:49
  • I discovered it's a SIMBL plugin. Answer revised accordingly
    – Tetsujin
    Commented Dec 2, 2015 at 7:44

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