We are excited to share that vertical tabs and a new sidebar experience are now available in Nightly 131. This update has been highly anticipated and requested by the community, ...
Yeah! It’s finally here!
Okay it’s not sexy as some extensions already available but it’s a good move!
It’s native and in work, I hope they will do something like sidetabs (https://addons.mozilla.org/en-US/firefox/addon/sidetabs/)