https://blendermarket.com/products/editor-swap

Looking for a quick way to switch between editors? Need more space by combining the Outliner and Properties Editor? Look no further—try Editor Swap now!   What is this addon for? This addon lets you switch between editors with a button or a shortcut. The linking between editors is fully customizable, allowing you to swap sequentially between two or more editors. Additionally, you can hide the button if you prefer to use only the shortcut, and you can assign the shortcut of your choice.