# Horos vs PostDICOM

**Leader by Vioscale score:** PostDICOM

| Attribute | Horos | PostDICOM |
|---|---|---|
| **Vioscale score** | 50.5 (24% (low)) | 56.9 (42% (low)) |
| activity.commits_last_30d | 100 | - |
| adoption.dependent_repos | 0 | - |
| adoption.github_stars | 293 | - |
| deployment.options | `{"cloud":true}` | `{"cloud":true,"hybrid":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 cloud-based medical imaging platform that stores, manages, and shares diagnostic images (DICOM and non-DICOM formats) with secure access, advanced viewing tools, and integration capabilities. No local server infrastructure required. |
| features.capabilities | `{"pricing_model":"free_open_source","deployment_model":"native_desktop_app","dicom_protocol_native_support":true,"secure_patient_image_sharing_portal":true}` | `{"iso_27001":true,"soc2_type_ii":false,"deployment_model":"zero_footprint_web_viewer","hl7_fhir_ehr_integration":true,"dicom_protocol_native_support":true,"fda_cleared_for_primary_diagnosis":false,"vendor_neutral_archive_vna_storage":true,"secure_patient_image_sharing_portal":true,"ai_computer_aided_detection_cad_triage":false,"hipaa_baas_business_associate_agreement":false,"non_dicom_visible_light_photo_management":true,"3d_volume_multi_planar_reconstruction_mpr":true}` |
| integrations.count | - | 9 |
| integrations.list | - | `[{"name":"FHIR"},{"name":"HL7"},{"name":"DICOMweb"},{"name":"API"},{"name":"EMR"},{"name":"EHR"},{"name":"HIS"},{"name":"RIS"},{"name":"CIS"}]` |
| language.primary | C++ | - |
| market.availability | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":["DE","FR","US","GB","CH","CA","SG","AU","IN","BR"],"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":"subscription","plans":[{"free":false,"name":"Professional","description":"Automated workflow for active clinics","contactSales":false,"includedLimits":{"storage":"500 GB"}},{"free":false,"name":"Premium","features":["Patient Upload Links"],"contactSales":false,"includedLimits":{"storage":"1,000 GB"}},{"free":false,"name":"Enterprise","features":["API & FHIR / HL7 Integrations","Patient Upload Links"],"contactSales":false,"includedLimits":{"storage":"2,000 GB"}},{"free":false,"name":"Custom","features":["Custom API Integrations","Dedicated account management","Priority support"],"description":"Purpose-built for hospital networks and large diagnostic groups with custom data volumes and multi-site architecture","contactSales":true}],"addOns":[{"name":"Storage"},{"name":"Users"},{"name":"Devices"},{"name":"Locations"},{"name":"API access"}],"freeTier":false,"sourceUrl":"https://www.postdicom.com/en/pricing","retrievedAt":"2026-08-25T21:49:06.061Z","freeTrialDays":7,"billingPeriods":["month","year"]}` |
| pricing.free_tier | yes | no |
| pricing.model | free | commercial |
| pricing.price_level | free | unknown |
| pricing.transparent | - | yes |
| 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.hipaa | - | yes |
| security.iso27001 | - | yes |
| security.pci | - | 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 | PostDICOM |
|---|:--:|:--:|
| **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 | - |

*Source: Vioscale. Generated 2026-09-01T14:59:51.253Z. "-" = undocumented, not absent.*