V2.0.0 with the ability to sync existing modifiers is out now!
Synced Modifiers is a free Blender Addon that allows you to add modifiers to multiple objects at the same time and automatically syncs all the modifiers using Drivers.
Free Script Sundays E02 - 'Synced Modifiers':
Adding a Synced Modifier:
Select all the objects you want to add modifiers to. Press J to bring up the Synced Modifiers Panel.
Select the Modifier which you want to add from the dropdown menu.
No need to find and select the source object every time you want to adjust some property.
The Synced Modifiers Panel will automatically find the source modifier for you and display the settings of the source modifier.
Tested on Blender version 2.91+
Changelog for v1.1.0:
Fixed the crash when delete unused drivers were used on objects with no drivers.
Few small tweaks to UI.
N-Panel and 'J' Popup panel now have exact same layout.