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I don't know about Tab Tree, but the popular Tree Style Tabs extension is now a WebExtension that is compatible with Firefox 57+. https://addons.mozilla.org/en
by cpeterso 9y ago
I don't know about Tab Tree, but the popular Tree Style Tabs extension is now a WebExtension that is compatible with Firefox 57+.
https://addons.mozilla.org/en-US/firefox/addon/tree-style-tab/ https://addons.mozilla.org/en-US/firefox/addon/tree-style-ta...
https://www.ghacks.net/2017/09/27/tree-style-tab-is-a-webextension-now/ https://www.ghacks.net/2017/09/27/tree-style-tab-is-a-webext...