The Blender Market (recently renamed to Superhivemarket) has add-on "Bqr Boolean Quad Ready" by Artemis3D

It is being touted for fixing topology created by Blender's boolean actions.

BUT, it is also mentions it helps resolve topology issues with models imported into Blender from CAD programs.

It only costs $5 bucks USA for an individual. So it's not going to break the back, Costs less than a cup of coffee from Tim Hortons or Starbucks.

https://superhivemarket.com/products/bqr-boolean-quad-ready?num=2&src=popular

Anyone used this addon?

I believe the author is the same Artemis3D who has an excellent youtube channel.

Cheers and take care...

Kenmo