Comment by rchaud

I do this on my laptop and phone, both of which usually have 100 or so tabs open.

What I've found to be helpful in organizing them is the Tab Stash browser extension. It allows you to view all tabs in a multi-column list, and group tabs into categories, like a much more intuitive version of bookmarks. It feels like card sorting, where you build your own nested information architecture by dragging and dropping tabs into boxes.

Then once you have your tabs organized, you can remove them from the list of active browser tabs. Tab Stash saves the list of tabs in its UI for browsing later.

https://addons.mozilla.org/en-CA/firefox/addon/tab-stash/