Since Blender 4.2 this add-on is hosted on blender extensions platform:

https://extensions.blender.org/add-ons/synchronize-workspaces/

Use version from Blender Market for older versions of Blender 

Imagine how much time you waste restoring viewport position every time, then switching on a different workspace in Blender! With this add-on, you can switch between them fluently, because this add-on keeps viewport position between different workspaces. It is that simple as it is.

You can disable synchronization for specific workspaces, or switch on/off using widget:

Note:

Add-on synchronizes the biggest 3D View in the workspace, it will have the sync icon.