# Horos vs OHIF Viewer

**Leader by Vioscale score:** OHIF Viewer

| Attribute | Horos | OHIF Viewer |
|---|---|---|
| **Vioscale score** | 50.5 (24% (low)) | 57.4 (35% (low)) |
| activity.commits_last_30d | 100 | 29 |
| adoption.dependent_repos | 0 | 103 |
| adoption.github_stars | 293 | 4,309 |
| deployment.options | `{"cloud":true}` | `{"on_prem":true,"self_hosted":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 web application for viewing and analyzing medical images with support for advanced visualization, segmentation, and custom workflow extensions. Runs entirely in the browser without requiring installation. |
| features.capabilities | `{"pricing_model":"free_open_source","deployment_model":"native_desktop_app","dicom_protocol_native_support":true,"secure_patient_image_sharing_portal":true}` | `{"pricing_model":"free_open_source","deployment_model":"zero_footprint_web_viewer","hl7_fhir_ehr_integration":false,"dicom_protocol_native_support":true,"secure_patient_image_sharing_portal":false,"ai_computer_aided_detection_cad_triage":false,"non_dicom_visible_light_photo_management":true,"3d_volume_multi_planar_reconstruction_mpr":true}` |
| integrations.count | - | 2 |
| integrations.list | - | `[{"name":"DICOMWeb"},{"name":"OpenID Connect"}]` |
| language.primary | C++ | TypeScript |
| license.spdx | - | MIT |
| market.availability | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | `{"hqCountry":"US","primaryMarkets":["US"],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | `{"mac":true}` | `{"web":true}` |
| pricing | `{"type":"free","summary":"Free and open-source","freeTier":true,"sourceUrl":"https://horosproject.org","retrievedAt":"2026-08-21T16:46:52.558Z"}` | `{"type":"open_source","freeTier":true,"sourceUrl":"https://ohif.org","retrievedAt":"2026-08-21T16:48:31.772Z"}` |
| pricing.free_tier | yes | yes |
| pricing.model | free | commercial |
| pricing.price_level | free | free |
| pricing.transparent | - | yes |
| release.cadence_days | 4 | 1 |
| 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"}]` | `[{"url":"https://github.com/OHIF/Viewers/releases/tag/v3.12.11","date":"2026-08-03T16:06:04Z","type":"stable","version":"v3.12.11"},{"url":"https://github.com/OHIF/Viewers/releases/tag/v3.12.10","date":"2026-07-24T17:52:13Z","type":"stable","version":"v3.12.10"},{"url":"https://github.com/OHIF/Viewers/releases/tag/v3.12.9","date":"2026-07-23T11:46:01Z","type":"stable","version":"v3.12.9"},{"url":"https://github.com/OHIF/Viewers/releases/tag/v3.13.0","date":"2026-07-21T20:13:02Z","type":"stable","version":"v3.13.0"},{"url":"https://github.com/OHIF/Viewers/releases/tag/v3.12.8","date":"2026-07-21T14:33:04Z","type":"stable","version":"v3.12.8"},{"url":"https://github.com/OHIF/Viewers/releases/tag/v3.12.7","date":"2026-07-17T15:26:54Z","type":"stable","version":"v3.12.7"},{"url":"https://github.com/OHIF/Viewers/releases/tag/v3.12.6","date":"2026-07-07T18:00:30Z","type":"stable","version":"v3.12.6"},{"url":"https://github.com/OHIF/Viewers/releases/tag/v3.12.5","date":"2026-06-17T16:10:54Z","type":"stable","version":"v3.12.5"},{"url":"https://github.com/OHIF/Viewers/releases/tag/v3.12.4","date":"2026-06-05T12:56:31Z","type":"stable","version":"v3.12.4"},{"url":"https://github.com/OHIF/Viewers/releases/tag/v3.12.3","date":"2026-05-27T14:55:58Z","type":"stable","version":"v3.12.3"},{"url":"https://github.com/OHIF/Viewers/releases/tag/v3.12.2","date":"2026-05-18T13:39:30Z","type":"stable","version":"v3.12.2"},{"url":"https://github.com/OHIF/Viewers/releases/tag/v3.13.0-beta.6","date":"2026-02-10T16:19:48Z","type":"prerelease","version":"v3.13.0-beta.6"},{"url":"https://github.com/OHIF/Viewers/releases/tag/v3.13.0-beta.5","date":"2026-02-10T15:08:03Z","type":"prerelease","version":"v3.13.0-beta.5"},{"url":"https://github.com/OHIF/Viewers/releases/tag/v3.13.0-beta.4","date":"2026-02-10T12:55:06Z","type":"prerelease","version":"v3.13.0-beta.4"},{"url":"https://github.com/OHIF/Viewers/releases/tag/v3.13.0-beta.3","date":"2026-02-10T02:57:21Z","type":"prerelease","version":"v3.13.0-beta.3"},{"url":"https://github.com/OHIF/Viewers/releases/tag/v3.13.0-beta.2","date":"2026-02-10T02:24:15Z","type":"prerelease","version":"v3.13.0-beta.2"},{"url":"https://github.com/OHIF/Viewers/releases/tag/v3.13.0-beta.1","date":"2026-02-09T21:47:57Z","type":"prerelease","version":"v3.13.0-beta.1"},{"url":"https://github.com/OHIF/Viewers/releases/tag/v3.13.0-beta.0","date":"2026-02-07T16:24:36Z","type":"prerelease","version":"v3.13.0-beta.0"},{"url":"https://github.com/OHIF/Viewers/releases/tag/v3.12.0","date":"2026-02-06T17:45:03Z","type":"stable","version":"v3.12.0"},{"url":"https://github.com/OHIF/Viewers/releases/tag/v3.12.0-beta.135","date":"2026-02-05T22:02:15Z","type":"prerelease","version":"v3.12.0-beta.135"}]` |
| 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}` | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=%40ohif%2Fextension-cornerstone&per_page=100","last_12m":0,"max_severity":null}` |

## Capabilities (Medical Imaging Pacs)

| Capability | Horos | OHIF Viewer |
|---|:--:|:--:|
| **Capabilities** |  |  |
| Deployment model | Native desktop app | Zero footprint web viewer |
| 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 | Free open source |

*Source: Vioscale. Generated 2026-09-01T17:28:20.592Z. "-" = undocumented, not absent.*