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Sounds like you'd need something like this:

I use it all the time whenever I get to 10-15 "idle" tabs I don't need that day anymore.

I like being able to switch to any of my tabs using the exact same UI technique as I would for any other tab, and press qqqqqqqqqq to view and kill many of tabs in succession.

There's tabvention, automatic 'tab list' backup as bookmark folders if you reach a certain (configurable) number.

https://chrome.google.com/webstore/detail/tabvention/kcjmdpj...

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