There's a Firefox extension named OneTab, it aggregates all your open tabs into a single page, closing every tab except the OneTab. I have mine pinned. That, or

There's a Firefox extension named OneTab, it aggregates all your open tabs into a single page, closing every tab except the OneTab. I have mine pinned. That, or Ctrl+Shift+D in Firefox to bookmark all tabs. I tend to have 10+ tabs open myself but the thought of that many tabs gives me the heebie-jeebies.