Description

Revit is a BIM capable CAD package from Autodesk

Libre software with Revit integration can be seen in the Revit extensions category

There are free and open source alternatives to Revit. A good place to look for alternatives is https://alternativeto.net/software/autodesk-revit/

Open source alternatives

There are extensive resources on the internet. On this site you can look through the Category: Autodesk Revit