Horos
View and process medical images on macOS with open-source software
- Vendor
- The Horos Project
- Also known as
- horos
Available worldwide
What is Horos?
An unrestricted, community-developed desktop application that enables visualization and manipulation of medical imaging data on Apple computers, built on technology from OsiriX.
Horos pricing
We don't have Horos's full plan breakdown yet (its pricing page resisted automated reading). Here's what we could confirm. Always check live pricing for exact numbers.
What Horos does
The capabilities that matter for medical imaging pacs, normalised so it lines up with every alternative. “-” means we haven't confirmed it, not that it's missing.
- Deployment model
- 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
Platform & deployment
Independently observed- macOS
- Self-hosted
Integrations (1)
Independently observed- Purview•
Security & compliance
Known vulnerabilities: 0 (0 in the last 12 months) sourcea count reflects scale & disclosure, not quality
Horos FAQ
Common questions about Horos, answered from independent, dated evidence.
What is Horos?
An open-source DICOM viewer and imaging workstation that has served over one million users for more than a decade. Available as a desktop application with cloud-based sharing and reporting capabilities. It is indexed under Medical Imaging Pacs.
Source: https://horosproject.org
Is Horos free?
Horos offers a free tier, so you can start without paying. Pricing changes often, so verify at source before relying on it.
Source: https://horosproject.org
What platforms does Horos support?
Horos supports macOS. Platforms we have not confirmed are simply not listed here rather than ruled out.
Source: https://horosproject.org
Can Horos be self-hosted?
Yes. Horos can be deployed cloud / SaaS, hybrid and on-premise, so it does not have to run on the vendor's infrastructure.
Source: https://horosproject.org
What security certifications does Horos have?
We have independently confirmed GDPR for Horos. Certifications we do not list are ones we have not been able to verify from public sources, which is not the same as Horos not holding them. Always confirm compliance directly before you rely on it.
Horos alternatives
Other medical imaging pacs we track, ranked by the same independent score.
- Intelerad Medical SystemsCloud-based platform for centralizing medical imaging and enabling physician collaboration across healthcare organizationslow · 7%
- PostDICOMMedical imaging archive and diagnostic viewer hosted securely in the cloudlow · 34%
- OHIF ViewerA customizable web-based platform for viewing and analyzing medical imageslow · 33%
- GE Healthcare Centricity PACSlow · 3%
- Dedalus IMPAXHealthcare platform combining electronic medical records with AI-enhanced pathology diagnosticslow · 8%
- Radiant DICOM ViewerA straightforward DICOM viewer for accessing and analyzing medical imaging fileslow · 23%
The vioscaleAI score: one lens on the evidence
Not user reviews and not a paid placement: a confidence-weighted blend of the independent signals below (adoption, activity, security posture, and more), which you can sort and re-weight yourself. Vendors can correct their listing but can never move their rank, and stars are weighted low as a vanity metric. It is one way to read the evidence for Horos, not the verdict.
| Signal | Score | Weight | Contribution | Evidence |
|---|---|---|---|---|
| Release cadence | 88 | 0.05 | 4.6 | ✓ |
| Capabilities | 46 | 0.07 | 3.1 | ✓ |
| Stars | 53 | 0.03 | 1.4 | ✓ |
| Security score | 27 | 0.04 | 1.1 | ✓ |
| Integrations | 9 | 0.07 | 0.6 | ✓ |
| Dependent projects | 0 | 0.06 | 0.0 | - |
| Development activity | 0 | 0.09 | 0.0 | ✓ |
| Security posture | 5 | 0.04 | 0.0 | - |
| Package downloads | 0 | 0.14 | 0.0 | - |
| Developer Q&A activity | 0 | 0.06 | 0.0 | - |
Computed . Re-weight it by intent, or see the full method.
All data & sourcesshow ↓
Every value we hold, with its source, retrieval date, and confidence. This is the evidence behind the score: don't trust it, verify it.
Activity
| Attribute | Value | Evidence |
|---|---|---|
| Commits last 30d | 0 | mediumsource · 2026-09-18 · 65% |
Adoption
| Attribute | Value | Evidence |
|---|---|---|
| Github stars | 630 | highsource · 2026-09-18 · 90% |
Content
| Attribute | Value | Evidence |
|---|---|---|
| Faq | 5 items | mediumsource · 2026-09-10 · 62% |
Features
| Attribute | Value | Evidence |
|---|---|---|
| Capabilities | Pricing model: free_open_source · Deployment model: native_desktop_app · Dicom protocol native support: Yes · Secure patient image sharing portal: Yes | mediumsource · 2026-09-02 · 60% |
Integrations
| Attribute | Value | Evidence |
|---|---|---|
| Count | 1 | mediumsource · 2026-09-02 · 60% |
Language
| Attribute | Value | Evidence |
|---|---|---|
| Primary | C++ | highsource · 2026-09-18 · 90% |
Market
| Attribute | Value | Evidence |
|---|---|---|
| Availability | PrimaryMarkets: … · AvailabilityScope: global · AvailableCountries: … · NotAvailableCountries: … | highsource · 2026-09-02 · 75% |
Pricing
Release
Security
| Attribute | Value | Evidence |
|---|---|---|
| Gdpr | Yes | highsource · 2026-09-02 · 75% |
| Trust center | https://horosproject.org/security | mediumsource · 2026-09-02 · 60% |
| Vulnerabilities | Count: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=ubuntu&package_name=libgrokj2k&per_page=100 · Last 12m: 0 | highsource · 2026-09-02 · 90% |
| Scorecard | 2.7 | highsource · 2026-09-18 · 90% |
Is Horos the right choice for you?
Tell us the job, the constraints and what you weigh most, and we will rank Horos against the rest of the medical imaging pacs we index, using the same dated evidence weighted your way.
Free to run, no account needed to start. How the evaluation works
Is this your product?
This profile was built from public sources without asking you. You can take the badge below and use it anywhere, and you can claim the profile to correct anything we got wrong. Both are free, and neither moves Horos up or down: nobody can buy rank here, including you.
Take the badge
Live, always current, and free to use on your own site. It shows Horos's independent score and links back to this profile.
<a href="https://www.vioscale.ai/software/horos" target="_blank" rel="noopener">
<img src="https://www.vioscale.ai/badge/software/horos.svg" alt="Horos, verified on vioscaleAI" width="330" height="76" loading="lazy" />
</a>Markdown, for a README →
[](https://www.vioscale.ai/software/horos)Claim the profile
Verify you control the domain, then point us at the pages that state the facts about Horos and add your own description and media. Free, and it does not change the score.
- Correct anything wrong, with evidence
- Point our crawler at the pages that matter
- Write your own description and add media
Not the owner? How vendor profiles work