Snow Owl Terminology Server…

scales from a small kernel embedded in single-user products to n-tier clusters supporting hundreds of concurrent users.

Clients can easily access and query SNOMED CT, LOINC®, ATC, ICD-10, and dozens of additional terminologies via REST or Java APIs. Collaborative distributed authoring is also supported, including creating and maintaining your own local code systems, mapping between terminologies, and creating terminology subsets.

If you’d like to see how our terminology server is used as the foundation for terminology authoring tools, please see our collaborative authoring page.

Tried the REST? Now try the best.

Our terminology server is ready for today and prepared to power the future.

We love authors!

Distributed revision control system supports large teams of authors and reviewers working on independent branches.
Extensive support for expression constraints and semantic queries, including Extended SNOMED CT Compositional Grammar.

We love developers!

Developer-friendly REST API uses a relatively small set of operations, provides descriptive error messages, and makes use of HATEOAS for resource linking and navigable associations.
Traditional, white-label (embed within your product), and source code licenses available.

We love standards!

Standard distribution formats (e.g. SNOMED RF2, ICD-10 ClaML, LOINC csv) eliminate reliance on proprietary vendor formats.
Full support for SNOMED CT logical definitions (OWL 2 EL) with extended support for extensions using advanced description logic features (OWL 2 DL) including datatype properties, universal restriction, disjunction, and more.

Those Are Just A Few Main Features, There Are Plenty More

Complete SNOMED CT RF2 support
RF2 full, snapshot & delta import/export
SNOMED CT RF1 & RF2 publication
Terminology authoring
Deployable as embedded kernel
Deployable as n-tier server
Dynamic concept model
Custom subset exports
REST and Java APIs
Task-based authoring
Scripting support
Intensional refset creation
Programmatic refset generation
Custom subset export formats

Collaborative authoring
Distributed authoring
Version creation
Patches on versions
Version comparison
Independent work branches
Workflow service integration
Task management integration
Work-in-process isolation
Published and unpublished content
Reference set / subset creation
Terminology maps
Unlimited terminologies
Formal MRCM integration

Semantic query evaluation
ESCG expression evaluation
Intelligent lexical searches
Reasoner job execution framework
Fast OWL 2 EL with datatype properties
Full OWL 2 DL with ∀, ∨, ¬
Semantic difference computation
Plug-and-play any Protege reasoner
Support for non-OWL API reasoners
Incremental reasoning
Normal form transformation
Reference set comparison
Post-coordination
Automatic pre-coordination