I’m oddly fixated on how much less I like Safari’s tabs search mode compared to Chromium-based browsers. The keyboard shortcut for Safari is easy enough but I can’t seem to build the muscle memory. I wrote about Tab Switcher and Tabby, both of which I like in different ways. Here are a couple of ways to skin said cat, one of which is a paid app, and the others are AppleScript-based.
Witch
Which is a utility that modifies your Mac’s default command-tab switching feature. If you create an action thus…

…you can view a list of Safari’s open tabs in the resulting overlay. You can even search. As with Tabby and Tab Switcher, you can set a keyboard shortcut to activate the list. It works with other applications with multiple documents, too.
AppleScript
Here’s an easy AppleScript that will activate Safari and open tab search:
tell application "Safari"
activate
delay 0.2
tell application "System Events"
keystroke "\\" using \{shift down, command down}
end tell
end tell
You can launch this from Launchbar or any fine Mac launching utility.
Shortcuts
At least on the Mac, this AppleScript will work just fine if run from Shortcuts.
