Blender addon - Apply all Modifiers of selected objects
Useful if you have lots of objects and just want to apply all modifiers (Boolean, Solidify, Array, ...) to them in one go.
Select the objects to which you want to apply the modifiers to, then go to Object > Apply > Apply all modifiers of selected objects.
There is nothing special required to install this addon. Follow e.g. the official guide on how to install Addons.