Tab groups have become one of Firefox’s most loved ways to stay organized — over 18 million people have used the feature since it launched earlier this year. Since then, we’ve been listening closely to feedback from the Mozilla Connect community to make this long-awaited feature even more helpful.
We got vertical tabs, that’s a good first step. I imagine full-on tree-style tabs is more work, though in combination with (non-AI) tab groups it has already replaced my use of Sidebery. A tree of tabs would be nice though.