Require a recommended IFC viewer that can be used for IFC 2x3 and IFC 4.3 RC1 versions as well.
There are many available online but would like the "best" free utility recommended by Bentley themselves
(Polish freeware)
I have seen one guy from Bentley using BIM Vision, and it seems allright.
(Polish freeware)
I have seen one guy from Bentley using BIM Vision, and it seems allright.