Your shared source of truth for understandable, reusable terminology
The Wistor Ontology (OTL) Viewer is the shared source of truth for ontologies and metadata. It complements the OTL Editor by making published definitions broadly accessible. RDF and OWL models become clear, searchable structures that can be explored by everyone who needs it, expert or not.
The OTL Viewer is a ready-to-use template app for organizations that rely on structured, consistent terminology and metadata. It centralizes your ontology in one environment where architects, data teams and contractors can explore, search and understand definitions. Instead of scattered spreadsheets or static PDFs, the Viewer provides a reliable reference thaduces errors and accelerates collaboration.
The OTL Viewer combines semantic precision with practical usability. These features ensure your data definitions stay consistent, reusable and aligned with open standards.
The OTL Viewer transforms technical RDF, OWL and SHACL models into intuitive, human-readable structures. It makes ontology terms, attributes and relationships easy to search and understand across teams. By presenting metadata in a clear format, the Viewer lowers the barrier for non-technical users while preserving semantic precision for data architects and enterprise architects.
Users can search, filter and navigate ontologies and metadata in multiple views, such as tables and graphs. Configurable navigation options allow browsing by hierarchy, function or alphabetical order, depending on project needs. This flexibility enables both technical specialists and domain experts to quickly locate the right definitions and relationships.
Every ontology evolves over time, and the OTL Viewer supports this with built-in version control. Users can compare versions, track changes and maintain a clear audit trail. This strengthens governance, ensures compliance with open standards, and provides confidence that the latest definitions are always available.
The OTL Viewer includes a built-in commenting feature that allows users to leave feedback directly on ontology terms and metadata definitions. This ensures that questions, improvements and clarifications are captured in the right place, reducing unnecessary emails or meetings and speeding up the feedback loop.
Different teams need different perspectives. The Viewer allows organizations to configure navigation trees, role-based access and custom layouts that match their processes. Whether for project onboarding, contractor guidance or enterprise data governance, the Viewer adapts to the context while ensuring consistent terminology.
Organizations often need to align multiple ontologies or vocabularies. The OTL Viewer visualizes mappings and relationships to external models, sector standards or enterprise data structures. This feature ensures semantic interoperability, reduces duplication of work, and creates a connected data ecosystem that supports integration and reuse across projects and systems.
Quickly connect your ontology or metadata model, configure navigation and go live. The OTL Viewer makes semantic definitions searchable and reusable without custom development.
Ontologies and metadata are critical for consistent, high-quality data, but too often they are locked in spreadsheets, PDFs or triple stores only accessible to specialists. This fragmentation causes miscommunication, delays and rework.
The OTL Viewer solves this by making ontologies and metadata human-readable and machine-readable at the same time. It provides a single, authoritative source of truth aligned with open standards such as RDF, OWL and SHACL. Organizations reduce errors, speed up collaboration and ensure that data definitions remain clear, consistent and reusable across teams, projects and systems.
