If you, like me, like the minimalistic UI, you’ve definitely hidden the toolbar and customized the RubyMine as you prefer.
Here is one thing you may like as well — Navigation Bar.
It is hidden by default in RubyMine. You can have in shown permanently (try View->Navigation Bar in main menu) but you can also summon it every time you need it — just hit ⌥ Home/Alt+Home.
Navigation Bar a nice replacement to the Project View. You can quickly navigate through folders structure and open files in the editor.
NOTE: I know the Home key is not available on laptops, so if you use a laptop keyboard, you’ll need to re-assign the hotkey in IDE Settings.
By the way, you can filter files/folders in the navigation bar popups, if you just start typing…
And many cool shortcuts such as ⌃N/Alt+Insert work nicely inside of Navigation Bar, which lets you create new files, classes, and everything really really quickly and using keyboard only.
Remember: ⌥ Home/Alt+Home. Try it if you haven’t yet and let us know what you think!
Develop with pleasure!