I've always wondered why Firefox don't grab hold of the "renegade" space they already occupy, with confidence through their existing users, an alternative and genuinely independent browser down to the engine. They are the market leaders of non-webkit, a huge strength among chromium copycat popup shops with identical wins and failures... or do I have to write the TV ad as well?

I feel confident to assume the majority of dedicated Firefox users will read and think of this feature release, et al most new features as of late, as trivial. The true benefit of using Firefox in itself isn't "ease of planning camping trips" but something much more.

This is great news! I am forced to use Chrone for work and this is the best new feature they’ve shipped in a while. So handy for video meetings where I also want to take notes or have have some other reference doc handy.

I’m actually glad to see this. We have been asking Firefox to build features, instead of AI garbage, and this may be something I didn’t know I wanted.

What makes this better than having two full browser windows side by side?

I hope that isn't a simple drop down selector listing all tabs... feature might be a complete non-starter for some of us with a few too many open tabs.

Looks like default-off (phew), unlike Chrome. A feature no-one asked for. Especially in FF where memory is well managed.

  * reading two distantly separated sections of a long article on two split tabs;
  * reading a research paper on one tab and typing a question to StackExchange on the other;
  * reading a scanned book written in French on one tab and using a dictionary on the other.

Firefox introducing a feature which addons handled quite easily and much better in previous versions.