The Pie Workspaces addon for Blender 2.80 by Ethanaeris, provides a pie menu of de available workspaces. The shortcut used is Ctrl+Alt+W and the pie-menu is not just one with 8 options, but provides a pie menu as shown in the image below.
Download and Install
You can download the Pie Workspaces from Github here. The easiest way is probably to use the Download Zip button, extract it and install it in the Blende preferences. That is in Blender: Edit > Preferences > Addons > Install and browse to the Pie_workspaces.py.
You will notice that some option not seems to work like Mask and some other workspaces. That could be because they are not activated. Therefore, if you want to use those, check the workspaces bar.
A funny thing is that is seems to work nearly eveywhere, no matter where your cursors is. The only places the Pie Workspaces addon doesn’t work is in the Text Editor and in the Python console.
Actually I didn’t expect much from this addon because I thought “Well, there is a top-bar already where you can reach out to choose your workspace”. But now that I just tried it out for the sake of an article here, I like it. Sometimes I want to switch quickly between editing and sculpting. Pretty funny, I can say.