SlicerCMF
SlicerCMF is a free, open-source set of 3D Slicer modules for dental and craniofacial research: CBCT superimposition, 3D landmark measurements and surface distance maps. Installed through the 3D Slicer Extension Manager; dormant since 2022 but still built for Slicer 5.12.
MITK (Medical Imaging Interaction Toolkit)
MITK is a free, open-source (BSD) medical imaging workbench from DKFZ Heidelberg. It opens CT and CBCT DICOM, segments structures manually or with AI tools, measures and exports STL surfaces. No dental modules or implant planning.
Voreen
Voreen is a free, open-source (GPL v2) volume rendering framework from the University of Münster. VoreenVE renders CT, CBCT and other volumes on the GPU and builds analysis pipelines without code. Windows and Linux only; no dental features.
CustusX
CustusX is a free, open-source (BSD-3) research platform for image-guided surgery and navigation from SINTEF, Norway. It imports DICOM, registers images, tracks tools and handles intraoperative ultrasound. Research only, not FDA/CE approved; no dental tools.