Weasis
Weasis is a free, open source DICOM viewer designed for both standalone and web-based use, featuring a highly modular architecture. It is widely utilized in healthcare settings, including hospitals, health networks, multicenter research trials, and by patients. As cross-platform software, Weasis offers flexible integration with PACS, RIS, HIS, or EHR systems. The viewer leverages the OpenCV library to deliver high-performance and high-quality medical imaging renderings. From version 4 onwards, Weasis features a responsive user interface aligned with operating system options, offering an enhanced experience on high-resolution screens. Key features include support for a wide range of DICOM files, such as multi-frame, enhanced, MPEG-2, MPEG-4, and more. Users can import DICOM files via DICOM Query/Retrieve (C-GET, C-MOVE, and WADO-URI) and DICOMWeb (QUERY and RETRIEVE), as well as import and export DICOM CD/DVD with DICOMDIR.
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IMAIOS DICOM Viewer
IMAIOS DICOM Viewer (IDV) is a free online DICOM viewer that allows users to browse medical images directly from their computer, CD, or DVD, delivering lightning-fast 2D rendering. No particular computer skills are required; simply drag and drop your images to the loading files area to display them on the DICOM viewer. A web browser is all it takes to run IDV, whether you are at your workstation or another station, ensuring no waste of time. Your files are not uploaded to our network; your computer handles everything, guaranteeing the security of patients' medical information. Fast and user-friendly, the following features are available: scroll through a series of images, adjust brightness and contrast, zoom, pan image, measure an angle or distance in cm between two points of the image, and preset windowing settings for CT. Accessible to everyone on IMAIOS and on our app IDV, our DICOM viewer is free for personal and non-commercial use.
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3DimViewer
3DimViewer is a lightweight, open source software application designed for the visualization of medical DICOM images. Built using modern 3D graphics technologies, it allows for fast and interactive 3D visualization of medical data. It supports multiplanar reconstruction (MPR), volume rendering, and 3D surface rendering, making it useful for a variety of clinical and research applications. 3DimViewer includes basic tools for image navigation, such as zoom, pan, window/level adjustments, and measuring distances. It allows users to inspect DICOM metadata and provides a simple, user-friendly interface. It can read DICOM image data from local disks or removable media and does not require installation, as it is distributed as a standalone executable for Windows and macOS. 3DimViewer is intended to be an accessible tool for students, researchers, and professionals who need a fast and simple way to view 3D medical imaging data.
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Horos
Horos is a free, open source medical image viewer for macOS designed to support the medical imaging community with a fully functional, 64-bit DICOM viewer. Built on OsiriX 5.8, Horos is intended for research, education, and non-diagnostic medical imaging use. It supports a wide range of DICOM files and includes powerful tools such as 2D/3D multi-planar reconstruction, surface and volume rendering, and maximum intensity projection. Horos enables users to view, import, and export studies, measure anatomical structures, annotate images, and apply filters or adjustments for better visualization. It also offers anonymization tools, DICOM Query/Retrieve from PACS servers, and support for plugins and scripting for advanced customization. The interface is intuitive and adaptable for both novice and experienced users, with integration options for teaching files and educational workflows.
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