# Best RDF Databases *By [Shalaka Joshi](https://research.g2.com/insights/author/shalaka-joshi)* RDF databases, also known as triplestores, are a type of graph database that store triples. Triples are data points represented in a subject-predicate-object relationship. These databases perform retrieval in this triple format as a more specific way of receiving and viewing the data. RDF databases are beneficial because they organize the information into these sets of triples, but the can also be displayed to the user in graphs. Data can be pulled from RDF databases with a variety of query languages, but the most common is SPARQL. To qualify for inclusion in the RDF Database category, a product must - Provide data storage - Record data as triples - Allow users to retrieve the data using query language ## Category Overview **Total Products under this Category:** 11 ## Trust & Credibility Stats **Why You Can Trust G2's Software Rankings:** - 30 Analysts and Data Experts - 100+ Authentic Reviews - 11+ Products - Unbiased Rankings G2's software rankings are built on verified user reviews, rigorous moderation, and a consistent research methodology maintained by a team of analysts and data experts. Each product is measured using the same transparent criteria, with no paid placement or vendor influence. While reviews reflect real user experiences, which can be subjective, they offer valuable insight into how software performs in the hands of professionals. Together, these inputs power the G2 Score, a standardized way to compare tools within every category. ## Best RDF Databases At A Glance - **Leader:** [Progress MarkLogic](https://www.g2.com/products/progress-marklogic/reviews) - **Top Trending:** [RDFox](https://www.g2.com/products/rdfox/reviews) - **Best Free Software:** [Progress MarkLogic](https://www.g2.com/products/progress-marklogic/reviews) ## Top-Rated Products (Ranked by G2 Score) ### 1. [Progress MarkLogic](https://www.g2.com/products/progress-marklogic/reviews) Progress MarkLogic is an enterprise-grade multi-model data management platform that unlocks value from complex data. It works with the full breadth of a company's information and makes it easily discoverable and ready to power high-value applications, decision intelligence and trustworthy AI. Organizations leverage integrated capabilities to integrate, harmonize, search and visualize multi-model data to build a connected data ecosystem as the secure and scalable foundation for the AI era. **Average Rating:** 4.3/5.0 **Total Reviews:** 64 **Seller Details:** - **Seller:** [Progress Software](https://www.g2.com/sellers/progress-software) - **Company Website:** https://www.progress.com/ - **Year Founded:** 1981 - **HQ Location:** Burlington, MA. - **Twitter:** @ProgressSW (48,845 Twitter followers) - **LinkedIn® Page:** https://www.linkedin.com/company/progress-software/ (4,207 employees on LinkedIn®) **Reviewer Demographics:** - **Top Industries:** Information Technology and Services, Computer Software - **Company Size:** 54% Enterprise, 25% Small-Business ### 2. [RDFox](https://www.g2.com/products/rdfox/reviews) RDFox is a high-performance in-memory knowledge graph and semantic reasoner. Optimised for speed and advanced reasoning, it affords query and loading times that are orders of magnitudes faster than alternative triplestores, while also achieving greater insights into the data. RDFox is developed by Oxford Semantic Technologies—an Oxford University spin-out founded by leading academics backed by decades of cutting-edge research in semantic web technologies. **Average Rating:** 4.8/5.0 **Total Reviews:** 12 **Seller Details:** - **Seller:** [Oxford Semantic Technologies](https://www.g2.com/sellers/oxford-semantic-technologies) - **Year Founded:** 2017 - **HQ Location:** Oxford, GB - **Twitter:** @oxfordsemantic (1,749 Twitter followers) - **LinkedIn® Page:** https://www.linkedin.com/company/oxford-semantic-technologies/ (21 employees on LinkedIn®) **Reviewer Demographics:** - **Company Size:** 36% Small-Business, 29% Enterprise ### 3. [BrightstarDB](https://www.g2.com/products/brightstardb/reviews) BrightstarDB is an RDF triple store. It does not require the definition of a database schema, and with the RDF data model model you can easily add and integrate data of all shapes. We also implement the standard SPARQL query language, update language and protocol so you can use off-the-shelf client tools to connect to your data stores. **Average Rating:** 3.9/5.0 **Total Reviews:** 10 **Seller Details:** - **Seller:** [BrightstarDB](https://www.g2.com/sellers/brightstardb) - **Year Founded:** 2012 - **HQ Location:** N/A - **Twitter:** @BrightstarDB (187 Twitter followers) - **LinkedIn® Page:** https://www.linkedin.com/company/brightstardb/about **Reviewer Demographics:** - **Company Size:** 40% Enterprise, 40% Mid-Market ### 4. [Stardog](https://www.g2.com/products/stardog/reviews) Stardog is a reusable, scalable knowledge graph platform that enables enterprises to unify all their data, including data sources and databases of every type, to get the answers needed to drive business decisions. Stardog is an enterprise knowledge graph platform that allows customers to query massive, disparate, heterogeneous data regardless of structure with simplicity of implementation. Stardog’s enterprise customers include Fortune 500 companies in finance, healthcare, life sciences, energy, media, and government. **Average Rating:** 4.2/5.0 **Total Reviews:** 17 **Seller Details:** - **Seller:** [Stardog Union](https://www.g2.com/sellers/stardog-union) - **HQ Location:** Arlington, VA - **Twitter:** @StardogHQ (3,970 Twitter followers) - **LinkedIn® Page:** https://www.linkedin.com/company/10917244 (94 employees on LinkedIn®) **Reviewer Demographics:** - **Company Size:** 39% Small-Business, 33% Enterprise ### 5. [Graphwise GraphDB](https://www.g2.com/products/graphwise-graphdb/reviews) Graphwise GraphDB is an enterprise-ready Semantic Graph database and a key component of the Graphwise Graph AI suite. Designed for knowledge graphs, complex data integration, and AI applications, it supports W3C standards and provides secure, high-performance querying. It integrates into AI-agentic workflows to improve LLM accuracy, enabling information to be easily identified, disambiguated, and interconnected. Graphwise GraphDB addresses business problems involving highly interconnected data that challenges relational databases. It helps organizations uncover patterns using inference and fast full-text/faceted searches via synchronized services like Elasticsearch and OpenSearch. GraphDB guarantees high availability and no data loss through cluster and multi-cluster deployments. This architecture allows enterprises to move from fragmented data to a unified, AI-ready graph environment. **Average Rating:** 4.2/5.0 **Total Reviews:** 6 **Seller Details:** - **Seller:** [Graphwise](https://www.g2.com/sellers/graphwise) - **Year Founded:** 2024 - **HQ Location:** Sofia, BG - **LinkedIn® Page:** https://linkedin.com/company/graphwise (134 employees on LinkedIn®) **Reviewer Demographics:** - **Company Size:** 50% Enterprise, 33% Mid-Market ### 6. [AllegroGraph](https://www.g2.com/products/allegrograph/reviews) AllegroGraph® is a modern, high-performance, persistent graph database. AllegroGraph uses efficient memory utilization in combination with disk-based storage. AllegroGraph supports SPARQL, RDFS++, and Prolog reasoning from numerous client applications. **Average Rating:** 5.0/5.0 **Total Reviews:** 3 **Seller Details:** - **Seller:** [Franz](https://www.g2.com/sellers/franz) - **Year Founded:** 1984 - **HQ Location:** Lafayette, US - **Twitter:** @Franzinc (2,131 Twitter followers) - **LinkedIn® Page:** https://www.linkedin.com/company/franz-inc (44 employees on LinkedIn®) **Reviewer Demographics:** - **Company Size:** 75% Small-Business, 25% Mid-Market ### 7. [Apache Marmotta](https://www.g2.com/products/apache-marmotta/reviews) Apache Marmotta is a linked data platform that comprises several components. In its most basic configuration it is a Linked Data server. **Average Rating:** 5.0/5.0 **Total Reviews:** 2 **Seller Details:** - **Seller:** [The Apache Software Foundation](https://www.g2.com/sellers/the-apache-software-foundation) - **Year Founded:** 1999 - **HQ Location:** Wakefield, MA - **Twitter:** @TheASF (66,154 Twitter followers) - **LinkedIn® Page:** https://www.linkedin.com/company/215982/ (2,408 employees on LinkedIn®) **Reviewer Demographics:** - **Company Size:** 50% Enterprise, 50% Small-Business ### 8. [Blazegraph](https://www.g2.com/products/blazegraph/reviews) Blazegraph is a scalable, high-performance graph database with support for the Blueprints and RDF/SPARQL APIs. Blazegraph is available in a range of versions that provide solutions to the challenge of scaling graphs. Blazegraph solutions range from millions to trillions of edges in the graph. **Average Rating:** 5.0/5.0 **Total Reviews:** 1 **Seller Details:** - **Seller:** [Blazegraph](https://www.g2.com/sellers/blazegraph) - **Year Founded:** 2006 - **HQ Location:** Greensboro, US - **Twitter:** @BlazeGraph (699 Twitter followers) - **LinkedIn® Page:** https://www.linkedin.com/company/10445544 (1 employees on LinkedIn®) **Reviewer Demographics:** - **Company Size:** 100% Small-Business ### 9. [DISQOVER](https://www.g2.com/products/disqover/reviews) DISQOVER is a knowledge discovery platform that links siloed data using knowledge graph and semantic technologies, helping life sciences organizations accelerate their drug development activities. 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 decision-making. With DISQOVER, organizations enjoy the benefits of FAIR data, facilitating interoperability, and connectivity with other applications while building a scalable enterprise-linked data ecosystem. Additionally, DISQOVER’s open plug-in architecture allows an organization to seamlessly connect specialized artificial intelligence (AI) services to annotated, standardized, and structured data. DISQOVER is also available with natural language processing (NLP) capabilities ensuring users can maximize the value of their internal unstructured data, along with unstructured public data. Developed specifically for life sciences companies, DISQOVER has over 10,000 users ranging from scientific researchers, bioinformaticians, data scientists, and business profiles. DISQOVER can be deployed to support across the entire drug development life cycle and has four major application areas: R&D, Clinical, Regulatory, and Cross-Functional Intelligence. Customers include AstraZeneca, Amgen, the Princess Máxima Center for Pediatric Oncology, e-therapeutics, among others. **Average Rating:** 4.5/5.0 **Total Reviews:** 4 **Seller Details:** - **Seller:** [ONTOFORCE](https://www.g2.com/sellers/ontoforce) - **Year Founded:** 2011 - **HQ Location:** Ghent, BE - **LinkedIn® Page:** https://www.linkedin.com/company/ontoforce (36 employees on LinkedIn®) **Reviewer Demographics:** - **Company Size:** 75% Small-Business, 25% Mid-Market #### Pros & Cons **Pros:** - Data Accuracy (1 reviews) - Data Management (1 reviews) - Ease of Use (1 reviews) - Easy Integrations (1 reviews) - Integration Capabilities (1 reviews) **Cons:** - Complexity (1 reviews) - Complex Organization (1 reviews) - Complex Usage (1 reviews) - Difficult Learning (1 reviews) - Learning Curve (1 reviews) ### 10. [TopBraid EDG](https://www.g2.com/products/topbraid-edg/reviews) TopBraid EDG is a comprehensive data governance platform designed to help organizations manage, connect, and make sense of their data assets with unmatched flexibility and transparency. Powered by semantic web standards and knowledge graph technology, TopBraid EDG helps build an AI-ready data foundation for governing your data at scale. By seamlessly integrating taxonomies, ontologies, structured and unstructured data, and policies, TopBraid EDG enables dynamic, enterprise-wide semantic interoperability to connect disparate systems, drive smarter decision-making and compliance that inject policy into the data layer. With its scalable, extensible architecture, TopBraid EDG empowers organizations to unlock the full potential of their data while maintaining trust, accuracy, and agility. **Average Rating:** 4.7/5.0 **Total Reviews:** 3 **Seller Details:** - **Seller:** [TopQuadrant](https://www.g2.com/sellers/topquadrant) - **Company Website:** https://topquadrant.com - **Year Founded:** 2001 - **HQ Location:** Raleigh, US - **LinkedIn® Page:** https://www.linkedin.com/company/topquadrant (35 employees on LinkedIn®) **Reviewer Demographics:** - **Company Size:** 67% Mid-Market ### 11. [TripleBit](https://www.g2.com/products/triplebit/reviews) TripleBit is a fast and compact system for large scale RDF graph. TripeBit is designed with a compact storage and index structure, and it does not only reduces the size of indexes (e.g., through compression techniques) but also minimizes the number of indexes used in query evaluation. **Seller Details:** - **Seller:** [TripleBit](https://www.g2.com/sellers/triplebit) - **HQ Location:** Shanghai, China - **LinkedIn® Page:** https://www.linkedin.com/company/No-Linkedin-Presence-Added-Intentionally-By-DataOps (1 employees on LinkedIn®) ## Parent Category [NoSQL Databases](https://www.g2.com/categories/nosql-databases)