"Screen"-like functionality

[Julius Hamilton]

Hey,

There is a bash tool called screen which lets you switch windows between
different command line prompts.

Is there any similar tool for Emacs, where you could run some kind of
process, for example the Emacs web browser, then switch to a different
window or process within Emacs, such as a text file being edited?

I guess it would just be like having tabs but the tab bar would ideally not
be visible.

Thanks very much,
Julius