Horos™ (Horos Project, Geneva, Switzerland) is a free DICOM viewer for Mac OS X based on OsiriX 5.8, the latest open-source version of OsiriX. OsiriX Lite, the complete demo version, is still free, but it has various functional limitations. Although the 32-bit version of OsiriX was free, OsiriX recently ceased to be an open-source software.
Previous studies have reported the use of virtual bronchoscopy involving OsiriX™ (Pixmeo, Geneva, Switzerland), an open-source DICOM viewer for Mac OS, and its application for transbronchial biopsy and surgery.
