Tab Mission Control per brisonharvey

Tab Mission Control gives you a fast, visual way to manage tabs across Firefox windows.

Instead of hunting through crowded tab strips, you can open a clean overview of your tabs, search instantly, move through them with the keyboard, drag tabs to reorder them, and restore recently closed tabs from one place.

Features:

Visual tab overview across all Firefox windows
Fast search by tab title and URL
Keyboard navigation for quick tab switching
Drag-and-drop tab reordering and moving tabs between windows
Close tabs directly from the overview
Restore recently closed tabs
Hibernate discarded tabs and restore them when needed
Light, dark, and system theme support

Privacy:
Tab Mission Control works locally in Firefox. It does not send your browsing data to the developer or any third party, does not include analytics or telemetry, and stores only your selected theme preference locally.