disclosure: I&#x27;m a firefox user.<p>&gt;I think it&#x27;s the tabs. [...] It&#x27;s also the best file downloader<p>In what way? The only difference I can see is the download status bar, but that&#x27;s available on firefox as an extension.<p>&gt;the most configurable<p>debatable, considering firefox has a bunch of about:config options, whereas chrome has a few configurable flags.<p>&gt;has the best extension ecosystem.<p>Can you elaborate this? My impression was that firefox&#x27;s ecosystem was better because addons can do more (thanks to XUL), whereas chrome addons are limited to glorified userscripts.