[johnea]

A word was left out of the title: Again... Firefox releases tab groups

Tabs (including all kinds of groupings and UIs) were the best when they were dealt with in NPAPI plugins.

Mozilla foundation has been screwing them up ever since.

Of course, always for the betterment of humanity, totally not just because goggle told them to...

[wtallis]

Were there ever NPAPI plugins to manage tabs, or are you getting that confused with XUL extensions?