On Mac I can use Orion so I don't use Firefox that much. Why Orion? 1. It supports tree style tabs (note lower case, I mean the concept, not the extension) na

On Mac I can use Orion so I don't use Firefox that much. Why Orion? 1. It supports tree style tabs (note lower case, I mean the concept, not the extension) natively. (I think you can also use TST, the Firefox extension, as Orion strives to be compatible with Firefox and Chrome extensions). 2. It is not based on Chrome/Chromium, but rather on the built in browser engine on Macs. That said I don't know if it shows up as Safari or if it shows up as its own.