# Horos vs Radiant DICOM Viewer

| Attribute | Horos | Radiant DICOM Viewer |
|---|---|---|
| **Vioscale score** | 50.5 (24% (low)) | 18.3 (25% (low)) |
| activity.commits_last_30d | 100 | - |
| adoption.dependent_repos | 0 | - |
| adoption.github_stars | 293 | - |
| deployment.options | `{"cloud":true}` | `{"on_prem":true}` |
| description.long | Horos is a no-cost, open-source viewer for diagnostic medical images on Apple computers. It provides secure cloud-based study sharing and has been developed and maintained by a global open-source community. | A Windows-based viewer for DICOM medical images that enables study comparison, multiplanar reconstruction, and secure file sharing through anonymization. Supports PACS system integration and exports to various image and video formats. |
| features.capabilities | `{"pricing_model":"free_open_source","deployment_model":"native_desktop_app","dicom_protocol_native_support":true,"secure_patient_image_sharing_portal":true}` | `{"deployment_model":"native_desktop_app","dicom_protocol_native_support":true,"fda_cleared_for_primary_diagnosis":false,"secure_patient_image_sharing_portal":true,"3d_volume_multi_planar_reconstruction_mpr":true}` |
| integrations.count | - | 1 |
| integrations.list | - | `[{"name":"PACS"}]` |
| language.primary | C++ | - |
| market.availability | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | `{"hqCountry":"PL","primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | `{"mac":true}` | `{"windows":true}` |
| pricing | `{"type":"free","summary":"Free and open-source","freeTier":true,"sourceUrl":"https://horosproject.org","retrievedAt":"2026-08-21T16:46:52.558Z"}` | `{"type":"hybrid","summary":"Trial version available. Subscription and perpetual license options offered.","freeTier":false,"sourceUrl":"https://www.radiantviewer.com","retrievedAt":"2026-08-21T16:46:28.409Z"}` |
| pricing.free_tier | yes | no |
| pricing.model | free | commercial |
| pricing.price_level | free | unknown |
| pricing.transparent | - | no |
| release.cadence_days | 4 | - |
| release.history | `[{"url":"https://github.com/GrokImageCompression/grok/releases/tag/v20.3.13","date":"2026-08-22T14:36:39Z","type":"stable","version":"v20.3.13"},{"url":"https://github.com/GrokImageCompression/grok/releases/tag/v20.3.12","date":"2026-08-21T03:59:30Z","type":"stable","version":"v20.3.12"},{"url":"https://github.com/GrokImageCompression/grok/releases/tag/v20.3.11","date":"2026-08-18T16:49:52Z","type":"stable","version":"v20.3.11"},{"url":"https://github.com/GrokImageCompression/grok/releases/tag/v20.3.10","date":"2026-08-14T01:24:34Z","type":"stable","version":"v20.3.10"},{"url":"https://github.com/GrokImageCompression/grok/releases/tag/v20.3.9","date":"2026-08-04T03:42:11Z","type":"stable","version":"v20.3.9"},{"url":"https://github.com/GrokImageCompression/grok/releases/tag/v20.3.8","date":"2026-08-03T00:27:26Z","type":"stable","version":"v20.3.8"},{"url":"https://github.com/GrokImageCompression/grok/releases/tag/v20.3.7","date":"2026-07-22T11:59:33Z","type":"stable","version":"v20.3.7"},{"url":"https://github.com/GrokImageCompression/grok/releases/tag/v20.3.6","date":"2026-06-27T17:58:26Z","type":"stable","version":"v20.3.6"},{"url":"https://github.com/GrokImageCompression/grok/releases/tag/v20.3.5","date":"2026-06-17T17:38:45Z","type":"stable","version":"v20.3.5"},{"url":"https://github.com/GrokImageCompression/grok/releases/tag/v20.3.4","date":"2026-06-11T16:25:26Z","type":"stable","version":"v20.3.4"},{"url":"https://github.com/GrokImageCompression/grok/releases/tag/v20.3.3","date":"2026-05-13T17:23:46Z","type":"stable","version":"v20.3.3"},{"url":"https://github.com/GrokImageCompression/grok/releases/tag/v20.3.2","date":"2026-05-03T14:10:36Z","type":"stable","version":"v20.3.2"},{"url":"https://github.com/GrokImageCompression/grok/releases/tag/v20.3.1","date":"2026-05-01T14:37:22Z","type":"stable","version":"v20.3.1"},{"url":"https://github.com/GrokImageCompression/grok/releases/tag/v20.3.0","date":"2026-04-12T16:27:16Z","type":"stable","version":"v20.3.0"},{"url":"https://github.com/GrokImageCompression/grok/releases/tag/v20.2.9","date":"2026-04-12T02:50:10Z","type":"stable","version":"v20.2.9"},{"url":"https://github.com/GrokImageCompression/grok/releases/tag/v20.2.8","date":"2026-04-11T13:46:53Z","type":"stable","version":"v20.2.8"},{"url":"https://github.com/GrokImageCompression/grok/releases/tag/v20.2.7","date":"2026-04-07T01:30:29Z","type":"stable","version":"v20.2.7"},{"url":"https://github.com/GrokImageCompression/grok/releases/tag/v20.2.6","date":"2026-04-02T10:56:07Z","type":"stable","version":"v20.2.6"},{"url":"https://github.com/GrokImageCompression/grok/releases/tag/v20.2.5","date":"2026-03-29T20:20:15Z","type":"stable","version":"v20.2.5"},{"url":"https://github.com/GrokImageCompression/grok/releases/tag/v20.2.4","date":"2026-03-28T19:54:10Z","type":"stable","version":"v20.2.4"}]` | - |
| security.gdpr | - | yes |
| security.vulnerabilities | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=ubuntu&package_name=libgrokj2k&per_page=100","last_12m":0,"max_severity":null}` | - |

## Capabilities (Medical Imaging Pacs)

| Capability | Horos | Radiant DICOM Viewer |
|---|:--:|:--:|
| **Capabilities** |  |  |
| Deployment model | Native desktop app | Native desktop app |
| DICOM protocol native support | ✓ | ✓ |
| Vendor neutral archive vna storage | - | - |
| 3d volume multi planar reconstruction mpr | - | ✓ |
| Fda cleared for primary diagnosis | - | ✗ |
| AI computer aided detection cad triage | - | - |
| HL7 FHIR EHR integration | - | - |
| Non DICOM visible light photo management | - | - |
| Secure patient image sharing portal | ✓ | ✓ |
| HIPAA baas business associate agreement | - | - |
| SOC2 type ii | - | - |
| ISO 27001 | - | - |
| Pricing model | Free open source | - |

*Source: Vioscale. Generated 2026-09-01T16:46:45.513Z. "-" = undocumented, not absent.*