Free, Open-Source Medical Imaging
Horos Project (horosproject.org) scores 80 out of 100 on Brand Analyzer, placing it in the Brand-Ready tier among Healthcare brands, Technology brands, Non-profit brands, in the 72nd percentile of 15110 Healthcare brands.
Horos Project is a free, open-source medical imaging viewer for macOS, compatible with Apple Silicon and macOS 26 Tahoe. It supports PACS/DICOM standards and is maintained by a global community of volunteer developers. Positioned as a no-cost alternative to commercial PACS systems such as OsiriX and Purview, Horos serves medical professionals, radiologists, surgeons, and healthcare institutions seeking accessible imaging software. The project reports a community of over one million users and over a decade of continuous development, with its latest release, Horos 4.0.1, including the HorosCloud Plugin.
| Brand Name | Horos Project |
|---|---|
| Domain | horosproject.org |
| Industry | Healthcare, Technology |
| Main Competitors | OsiriX (81/100), Purview, 3D Slicer (85/100), RadiAnt DICOM Viewer, MicroDicom, GE Healthcare Centricity PACS (89/100), Philips IntelliSpace PACS (62/100) |
Moz Domain Authority 41/100 vs category average 41 / leader 95 - a strong backlink profile, so AI systems frequently encounter mentions of the brand.
Ranked #337,208 on the Tranco list of most-visited sites - modest traffic makes the brand easy for AI models to overlook.
No Wikipedia presence was found - a major gap, since Wikipedia is among the most heavily weighted sources in AI training data.
The homepage meta description reads "Horos 4.0.1 for Apple Silicon & macOS 26 Tahoe A new version is now available with the HorosCloud Plugin. Webinar:What’s the Difference? Horos vs… Hear from Kai Rivera, Purview…" (Meta description: 55 words. OG description present and descriptive) - this is the summary AI engines are most likely to quote.
Structured data on the homepage: 1 JSON-LD block(s), Organization schema, Breadcrumb/Website schema, og:title, og:description, og:image, og:type, Twitter cards, canonical. Adding FAQ schema would further help AI crawlers parse the brand's identity.
AI-crawler access: robots.txt present, no AI bot restrictions - robots.txt controls whether engines like GPTBot and ClaudeBot can read the site at all.
Detected tech stack: Apache, WordPress, Ghost.
Social footprint: verified profiles on GitHub, X (Twitter), Instagram, Facebook; no detected presence on LinkedIn, YouTube - consistent profiles reinforce the brand's identity across the web.
0 Reddit mentions - community discussion signals real-world reputation to AI models.
Live results from asking a general-purpose AI assistant about the brand, checked October 2026.
When asked "What is Horos Project?", Claude could identify the brand as of October 2026. Horos is a free, open-source DICOM medical image viewer for macOS, forked from the OsiriX codebase, used for viewing and managing radiology images like CT, MRI, and PET scans. Best known for Being a free open-source alternative to OsiriX for viewing DICOM medical images on Mac.
When asked "Best brands similar to Horos Project?", Claude would recommend Horos Project as of October 2026. It's a well-known free option in the medical imaging viewer space, especially for users wanting an OsiriX-like tool without licensing costs.
Common questions people ask in Google, ChatGPT, Claude, Gemini, Perplexity, and other AI search engines.
Horos Project's main competitors in Healthcare: OsiriX (81/100), 3D Slicer (85/100), GE Healthcare Centricity PACS (89/100), Philips IntelliSpace PACS (62/100).
Sources: Brand Analyzer scan
Horos Project offers the Horos medical imaging viewer, a free and open-source PACS/DICOM software application for macOS. Recent offerings include Horos 4.0.1, compatible with Apple Silicon and macOS 26 Tahoe, and the HorosCloud Plugin, which extends the software's cloud-related capabilities.
Sources: Horos Project official site
Horos Project is a free, open-source medical imaging viewer (PACS/DICOM software) designed for macOS, including support for Apple Silicon and macOS 26 Tahoe. It is developed and maintained by a global community of volunteer developers and is used to view and manage medical imaging data in clinical and research settings.
Sources: Horos Project official site
Horos Project has limited AI-search visibility, scoring 30/100 on Brand Analyzer's AI visibility composite (visibility 5, trust 46, recommendation 56). This estimates how likely AI engines like ChatGPT, Claude, Gemini and Perplexity are to know, trust, and recommend the brand.
Sources: Horos Project official site
Horos Project develops and distributes Horos, a free, open-source PACS/DICOM medical imaging viewer for macOS. The software allows users to view, manage, and analyze medical images such as those from radiology and surgery. It is continuously updated by volunteer developers, with recent versions adding compatibility with Apple Silicon and macOS 26 Tahoe, as well as new features like the HorosCloud Plugin.
Sources: Horos Project official site
Horos Project scores 56/100 on Brand Analyzer's AI recommendation signal, indicating it is reasonably likely to be surfaced when AI assistants like ChatGPT suggest Healthcare options. Recommendation depends on crawlability, structured data, and category authority.
Sources: Horos Project official site
Horos is known for being a free and open-source alternative to commercial PACS (Picture Archiving and Communication System) software, such as OsiriX and Purview. It is widely recognized within the medical imaging community for providing comparable imaging capabilities without licensing costs, supported by a community reported to exceed one million users.
Sources: Horos Project official site
Horos Project can improve AI discoverability by strengthening structured data (Organization and FAQ schema), maintaining an accurate Wikipedia/Wikidata entity, earning authoritative citations, and keeping content crawlable for AI bots. Brand Analyzer measures these as visibility, trust, and recommendation signals.
Sources: Horos Project official site
Horos is used by medical professionals, including surgeons and radiologists, as well as healthcare institutions that need an accessible, cost-free medical imaging and PACS solution compatible with macOS. The project reports a global community of more than one million users.
Sources: Horos Project official site
Horos is popular because it offers a free, open-source alternative to costly commercial PACS and DICOM viewer software, making advanced medical imaging tools accessible to a wide range of users. Its continuous development over more than a decade, support for current macOS systems like Apple Silicon and macOS 26 Tahoe, and a large global community of over one million users contribute to its ongoing adoption among medical professionals and institutions.
Sources: Horos Project official site
Horos Project scores 30/100 for AI visibility - how well ChatGPT, Claude, Perplexity and Google AI Overviews can discover, identify and cite the brand.
Horos Project has a weak AI-visibility profile at 30/100 - a proxy for how readily ChatGPT, Perplexity and Google's AI Overviews can recognise and cite it. Its strongest area is recommendation likelihood (56/100) and its weakest is visibility (5/100). It benefits from a global traffic rank of #337,208 (Tranco), a Moz Domain Authority of 41/100 and open access for AI crawlers (GPTBot, ClaudeBot, etc.). The main gaps holding it back: no clear Wikipedia entity to anchor it in LLM training data, no strong Wikidata entry and no llms.txt to steer AI to its best pages. In a live check, Claude could already identify Horos Project from memory (October 2026) - a sign these signals are paying off.
The score combines seven dimensions - name quality, digital presence, visual identity, messaging clarity, trust foundation, AI discoverability, and brand authority - into a single objective benchmark.
Ranked closest to Horos Project: Amgen (80/100), Holosync (80/100), Society of Hospital Medicine (SHM) (80/100), Hostage Tape (80/100).
A step up - brands to learn from: Zymo Research (81/100), Zurich Insurance Group (81/100).
Category leader: Booksy (96/100).
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