Corporate Headquarters Polygraphia Office Center fl.4, 47A Tsarigradsko Shosse, Sofia 1124, Bulgaria


Ontotext is a global semantic technology provider that applies artificial intelligence to Big Data management and text analytics. The company has created a comprehensive set of tools and services, including text mining and ontologies for automatic data reasoning. Ontotext’s core product GraphDB helps organizations identify meaning across diverse databases and silos of unstructured data. Findings are transformed into structured, meaningful information and useful business insights.

Awarded for many of its academic research projects, Ontotext with regional offices in the U.K. and U.S has been providing proven and mature semantic solutions, globally since 2008.


Core GraphDB is a platform for development of industry solutions, including: publishing and multimedia, life sciences, healthcare, museums and historical archiving, staffing and recruitment – and for other businesses where compliance and document management can be improved. The platform seamlessly integrates with various search technologies, including:

  • Semantic Web Solutions
  • Insight Platforms
  • eDiscovery Platforms
  • Cultural Heritage, Museums and Archiving Platforms



GraphDB is a semantic non-relational (NoSQL) graph database that manages massive loads, queries and inferencing in real time.

Self-Service Semantic Suite (S4)

S4 offers a cloud service for cost-effective, on-demand text analytics and metadata management.


2014 Bulgarian Innovation Enterprise Award Ontotext has received multiple awards for its products and research findings and has been deployed in over 1000 research projects and initiatives focused on semantics, text analysis and information discovery. Ontotext researchers have been featured in industry publications and journals.

Award for most outstanding and successful company in the 6th EU Framework Programme

2009 annual award for science Pythagoras