I have written an addon called "Orientation tools" which mainly allows to reorient 3D models.
You can download this addon for free. It is licensed under the GPL. .
Do not unzip the downloaded file, it installs as is. To install it, you know, it's in the menu Blender / Edit / Preferences / Addons / Install...
I hope this add-on will be as useful for you as it is for me.