: Sign in to your Autodesk Account and navigate to "Product Updates." Look for "Add-ons" or "Extensions" specifically filtered for the 2018 version.
Have you discovered an essential Revit 2018 extension not listed here? Mention it in the comments (if republishing) or contact the author directly. For urgent download links, refer to the Autodesk Knowledge Network archived section. download revit extensions for autodesk revit 2018 best