Top 6 RDF Databases SaaS Companies in May 2026

Wilmington, Delaware, United States

The Apache Software Foundation (ASF) is the global home for open source software, powering some of the world’s most ubiquitous software projects including Apache Airflow, Apache Camel, Apache Cassandra, Apache Groovy, Apache HTTP Server, and Apache Kafka. Established in 1999, The ASF is at the forefront of open source innovation, setting industry standards to advance software for the public good. We sustain open source projects in perpetuity, empowering developers to build communities that endure. Everything we do is open. Everyone is welcome. Learn more at https://apache.org. ASF’s annual Community Over Code event is where open source technologists convene to share best practices and use cases, forge critical relationships, and learn about advancements in their field. https://communityovercode.org/

Sofia, Bulgaria

Graphwise enables organizations to make their content and data truly AI-ready. By combining knowledge graphs with semantic AI, the company provides the trusted infrastructure enterprises need to scale AI investments and maximize ROI. Formed through the merger of Ontotext and Semantic Web Company, Graphwise brings together decades of expertise in semantic technologies. With over 200 professionals across North America, Europe, and APAC, the company focuses on breaking down data silos, improving search and discovery, and connecting AI to reliable, contextual knowledge.

Raleigh, North Carolina, United States

TopQuadrant helps organizations succeed in information management. Its flagship product, TopBraid EDG, uses Knowledge Graph technologies to connect metadata silos and deliver meaningful access for all data stakeholders to enterprise metadata, business terms, reference data, data and application catalogs, data lineage, requirements, policies, and processes.  TopBraid Enterprise Data Governance™ (EDG) supports the governance and provisioning of enterprise metadata, business glossaries and reference data. TopBraid Enterprise Vocabulary Net™ supports collaborative management of taxonomies and ontologies and offers auto-classification of documents and search enhancement. TopQuadrant customers include many government agencies and Fortune 1000 companies in numerous industries including pharmaceutical, financial services, energy and digital media. For more information, visit www.topquadrant.com.

Ghent, Flemish Region, Belgium

Through our intuitive data and technology solutions, we transform complex data into actionable insights, streamline drug development, and accelerate new treatments to patients. Our flagship product, DISQOVER, is a knowledge discovery platform which links siloed data using knowledge graph and semantic technologies. Users can search across disparate public and private data sources through a single interface that enables easy and efficient data discovery and exploration. DISQOVER allows researchers and collaborators to swiftly access valuable insights in one place, ensuring that information isn’t overlooked for faster and more accurate. The platform has been specifically developed for life sciences companies and is used by scientific researchers, bioinformaticians, data scientists, business users, and other roles. Customers include AstraZeneca, Amgen, the Princess Máxima Center for Pediatric Oncology, and more.

Oxford, Oxfordshire, United Kingdom

Oxford Semantic Technologies develop RDFox, the first market-ready high-performance knowledge graph designed from ground up with semantic reasoning in mind. Oxford Semantic Technologies was founded in 2017 as a spin-out of the University of Oxford with a mission to bring cutting-edge research in semantic web technologies to industry. The team started working on RDFox in 2011 at the Computer Science Department of the University of Oxford with the conviction that flexible and high-performance reasoning was a possibility for data extensive applications without jeopardising the correctness of the results. Patented modern computing techniques underpin RDFox’s ability to deliver responses to complex queries on the fly. This has unlocked a new wave of enterprise applications for prestigious partners. To learn more about our customer stories and the applications of RDFox, head over to our blog at: https://www.oxfordsemantic.tech/blog OST was acquired by Samsung Electronics in 2024.

Wien, Wien, Austria

Franz is a messaging app that combines chat & messaging services into one application. Franz currently supports Slack, WhatsApp, WeChat, Facebook Messenger, Telegram, Google Hangouts, GroupMe, Skype and many more.