Tabs often gets very cluttered. But I know which tabs that I always want to stay open. Email, social media, RSS feed, messenging. In short navigation tabs where you are only in the home screen.
So when you press a link in the management tab, it is opened in the content window. Or something along those lines. Whaddaya think?
Side bar tabs is the way to go if you’re using a horisontal widescreen.
You can pin the tabs you want to stay open on Firefox. You can also group tabs.