I use Panorama Tab Groups. It lets me group tabs into domains like each project or specific research topics. When I select a tab group the only tabs showing in

I use Panorama Tab Groups. It lets me group tabs into domains like each project or specific research topics. When I select a tab group the only tabs showing in the window are those in that group. If I select a different tab group it switches to display those. Tabs are kept in memory and not reloaded when switching. I don’t know if I would try to manage 1000 tabs in any system, but it does bring some clarity to my tabs. You might want to look into a plugin that will snapshot you tabs to a bookmark folder or html list so you can save the list and then close a lot of them.