Peek is a tool that can bring all of your Portals to the top using a keyboard shortcut, giving you quick, easy access to your Portals.
Enable it in the settings:
Once enabled, you can also choose the keyboard shortcut you want to use:
Tip: Try to choose a shortcut that will not clash with other applications.
Once enabled and your preferred shortcut chosen, you are good to go!
Here is an example of Peek in action: