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Weasis

Weasis is a powerful, multifunctional, and open-source DICOM viewer designed for standalone and web-based use. It supports integration with PACS, RIS, HIS, and EHR systems, and offers high-performance medical image visualization using OpenCV.
Latest: 4.7.0 GitHub
Last checked: Jun 9, 2026 12:10am
Rank: 3253/15140
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Overview

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License: Eclipse Public License 2.0 or Apache 2.0Winget: Available

Version & Lifecycle

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Current: 4.7.0 N-2: 4.6.5 Oldest supported: 4.0 Avg cadence: Every 84 days

Top Contributors

Top sitewide contributors:

  1. Anbarasan
  2. nico_k
  3. Bob
  4. Vigneshwaran

Community Notes

Deployment tip • May 12, 2026
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Weasis close-before-update note

For managed Weasis DICOM Viewer updates, make sure Weasis is closed before the MSI runs. The x64 MSI can return Exit Code 1 when the viewer is open during the update, so pre-close the application or schedule updates when no imaging session is active.

Use the official Weasis getting-started documentation and Weasis project releases for source validation, then confirm the installed Add/Remove Programs DisplayVersion after the update.

Release Notes & Updates

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Avg cadence:
Updates • 0

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Also known as

Other names people use for this app — helps search and matching.

Weasisweasisteam Weasis

Packaging Notes

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Cross-platform (Windows, macOS, Linux); standalone and web-based versions available

Notes

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Supports Windows, macOS, Linux; licensed under EPL 2.0 or Apache 2.0; modular architecture; responsive UI; multi-language support.