Company lists · Data refreshed November 2026
Top 25 Semantic web companies worldwide
RevenueBase identified 151 company matches for semantic web companies worldwide as of November 2026 and tracks 948 professional contacts across them, including 254 with verified work emails. The United States is the largest market and New York the largest hub.
This list covers company matches for semantic web companies worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026. Country and city lists for semantic web companies follow the table.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest semantic web companies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 45 contacts → | ||||
Exact match “The Ontology Engineering Group (OEG) is under the direction of Professor Asunción Gómez-Pérez and Professor Oscar Corcho The OEG -based in the ETSIINF at UPM- research in the…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 2 | 41 contacts → | ||||
Exact match “metaphacts is an AI-first knowledge graph company helping global enterprises transform data into consumable, contextual and actionable knowledge.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 3 | 39 contacts → | ||||
Exact match “TopQuadrant turns complex data into AI-ready data foundations for the world’s largest enterprises.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 4 | 35 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 5 | 33 contacts → | ||||
Exact match “Ontotext is a global leader in semantic technology and knowledge graph solutions.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 6 | 33 contacts → | ||||
Exact match “Cognizone is a startup of several ICT engineers, experienced in different computer science disciplines, working with data and semantics for the last 15 years, providing industrial…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 7 | 26 contacts → | ||||
Exact match “Semantic Arts is a professional services firm that specializes in helping organizations overcome integration debt by leveraging semantics and graph databases.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 8 | 21 contacts → | ||||
Exact match “By leveraging Big Data, Machine Learning & Semantic Web techs we are building a high-quality knowledge-graph derived from hundreds of sources.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 9 | 20 contacts → | ||||
Exact match “We build Knowledge Graphs using RDF, semantic tech and ontology development.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 10 | 18 contacts → | ||||
Exact match “SparkCognition acquired Maana on July 1, 2021.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 11 | 16 contacts → | ||||
Exact match “Die Empolis Intelligent Views GmbH zählt mit ihrer Knowledge-Graph-Plattform zu den führenden Anbietern semantischer Technologien und wissensbasierter KI im deutschsprachigen Raum.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 12 | 15 contacts → | ||||
Exact match “Founded in 2009, Epimorphics are at forefront of developing standards, tools and applications, working with organisations to organise and publish data.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 13 | 12 contacts → | ||||
Exact match “We are klarso - Let us make one thing clear: your data.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 14 | 12 contacts → | ||||
Exact match “SRDC Software Research & Development and Consultancy Corp, established in 2007, is a spin-off company of the Middle East Technical University (METU), Software Research and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 15 | 11 contacts → | ||||
Exact match “Semandex has pioneered the application of semantic technology for government and business solutions.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 16 | 9 contacts → | ||||
Exact match “We are a fast growing IT Service Company based in Bandung, Indonesia.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 17 | 8 contacts → | ||||
Exact match “Stronium was incorporated in 2004 and is an independent private limited company incorporated in Malaysia and wholly owned and operated by Malaysians.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 18 | 7 contacts → | ||||
Exact match “TentrisDB drastically reduces RAM consumption by executing analytical graph queries in a fundamentally different way than traditional graph databases.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 19 | 7 contacts → | ||||
Exact match “Ontopic Studio is a no-code environment for creating maintainable Knowledge Graphs of any scale and complexity from existing data.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 20 | 6 contacts → | ||||
Exact match “Perfect Drive | BrAIns on Top of AI™ At Perfect Drive, we believe artificial intelligence needs intelligence.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 21 | 6 contacts → | ||||
Exact match “Build enterprise Knowledge Graphs ready for operational use in days, not months or years.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 22 | 6 contacts → | ||||
Exact match “Semantrix (Sales) and Semantrix Research (R&D)- Intelligent Sensing Systems for Hard Environments We build AI-powered sensor platforms that protect people, reduce waste, and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 23 | 6 contacts → | ||||
Exact match “Synapta Srl is an Italian innovative start-up based in Turin.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 24 | 6 contacts → | ||||
Exact match “AtomRain provides a unique blend of strategy & technical with a unique combination of knowledge graph and artificial intelligence expertise to make possible what your business…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 25 | 6 contacts → | ||||
Exact match “Zenia Graph is a knowledge graph consulting firm enabling businesses to transform data by unleashing the power of the semantic knowledge graph.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “semantic web companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 151 semantic web companies worldwide
See the full list, filter by size, metro and specialty, and access 254 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Semantic web companies worldwide at a glance
As of Nov 6, 2026Companies by employee count
Email recency is reported on each country list linked below.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- Coverage
- Every country. Country and city lists for semantic web companies are linked below.
- What qualifies
- Company records worldwide whose business descriptions match “semantic web companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every displayed company carries at least one verified work email. RevenueBase tracks 254 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on November 6, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Semantic web companies by location
1 lists · largest firstEvery Semantic web companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “semantic web companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many semantic web companies are there worldwide?
RevenueBase identified 151 company matches for semantic web companies worldwide as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
Ontology Engineering Group UPM tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which country has the most semantic web companies?
The United States leads with 28 companies. Every semantic web companies list by country and city is linked on this page.
Which city has the most semantic web companies?
New York leads with 4 company records, followed by Turin (4) and London (3).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 254 professional contacts with verified work emails tracked across these 151 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 2026.
Ready to reach these companies? Verified emails and direct dials for all 151 semantic web companies worldwide. Start with a free account, no credit card.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
More company lists
Company intelligence · public preview
Top 25 semantic web companies worldwide
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 151 matching company records for semantic web companies worldwide, with 948 tracked contacts and 254 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 6, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 semantic web companies worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Ontology Engineering Group UPMoeg.fi.upm.esHQ: Boadilla Del Monte, SpainReported employees: 11-50 | Boadilla Del Monte, Spain | 11-50 | Exact match | 45 contacts → |
“The Ontology Engineering Group (OEG) is under the direction of Professor Asunción Gómez-Pérez and Professor Oscar Corcho The OEG -based in the ETSIINF at UPM- research in the…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Metaphacts Gmbhmetaphacts.comHQ: Walldorf, GermanyReported employees: 11-50 | Walldorf, Germany | 11-50 | Exact match | 41 contacts → |
“metaphacts is an AI-first knowledge graph company helping global enterprises transform data into consumable, contextual and actionable knowledge.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Topquadranttopquadrant.comHQ: Raleigh, NY, United StatesReported employees: 11-50 | Raleigh, NY, United States | 11-50 | Exact match | 39 contacts → |
“TopQuadrant turns complex data into AI-ready data foundations for the world’s largest enterprises.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Franz INCfranz.comHQ: Lafayette, CA, United StatesReported employees: 11-50 | Lafayette, CA, United States | 11-50 | Exact match | 35 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 5 |  Ontotextontotext.comHQ: Sofia, BulgariaReported employees: 51-200 | Sofia, Bulgaria | 51-200 | Exact match | 33 contacts → |
“Ontotext is a global leader in semantic technology and knowledge graph solutions.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Cognizonecogni.zoneHQ: Ixelles, BelgiumReported employees: 11-50 | Ixelles, Belgium | 11-50 | Exact match | 33 contacts → |
“Cognizone is a startup of several ICT engineers, experienced in different computer science disciplines, working with data and semantics for the last 15 years, providing industrial…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Semantic Arts, INCsemanticarts.comHQ: Fort Collins, CO, United StatesReported employees: 11-50 | Fort Collins, CO, United States | 11-50 | Exact match | 26 contacts → |
“Semantic Arts is a professional services firm that specializes in helping organizations overcome integration debt by leveraging semantics and graph databases.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Spaziodati SRLspaziodati.eu HQ: ItalyReported employees: 11-50 | Italy | 11-50 | Exact match | 21 contacts → |
“By leveraging Big Data, Machine Learning & Semantic Web techs we are building a high-quality knowledge-graph derived from hundreds of sources.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Semantic Partnerssemanticpartners.comHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 20 contacts → |
“We build Knowledge Graphs using RDF, semantic tech and ontology development.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  MAANAsparkcognition.comHQ: Palo Alto, CA, United StatesReported employees: 201-500 | Palo Alto, CA, United States | 201-500 | Exact match | 18 contacts → |
“SparkCognition acquired Maana on July 1, 2021.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Empolis Intelligent Viewsempolis.comHQ: Darmstadt, GermanyReported employees: 11-50 | Darmstadt, Germany | 11-50 | Exact match | 16 contacts → |
“Die Empolis Intelligent Views GmbH zählt mit ihrer Knowledge-Graph-Plattform zu den führenden Anbietern semantischer Technologien und wissensbasierter KI im deutschsprachigen Raum.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Epimorphics LTDepimorphics.comHQ: Bristol, United KingdomReported employees: 11-50 | Bristol, United Kingdom | 11-50 | Exact match | 15 contacts → |
“Founded in 2009, Epimorphics are at forefront of developing standards, tools and applications, working with organisations to organise and publish data.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Klarso Gmbhklarso.comHQ: Berlin, GermanyReported employees: 1-10 | Berlin, Germany | 1-10 | Exact match | 12 contacts → |
“We are klarso - Let us make one thing clear: your data.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Srdc Softwaresrdc.com.tr HQ: Cankaya, TürkiyeReported employees: 11-50 | Cankaya, Türkiye | 11-50 | Exact match | 12 contacts → |
“SRDC Software Research & Development and Consultancy Corp, established in 2007, is a spin-off company of the Middle East Technical University (METU), Software Research and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Semandex Networkssemandex.com HQ: Princeton, NJ, United StatesReported employees: 11-50 | Princeton, NJ, United States | 11-50 | Exact match | 11 contacts → |
“Semandex has pioneered the application of semantic technology for government and business solutions.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Mobilus Interactivemobilus-interactive.com HQ: Bandung, IndonesiaReported employees: 1-10 | Bandung, Indonesia | 1-10 | Exact match | 9 contacts → |
“We are a fast growing IT Service Company based in Bandung, Indonesia.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Stronium SDN BHDstronium.comHQ: Kuala Lumpur, MalaysiaReported employees: 1-10 | Kuala Lumpur, Malaysia | 1-10 | Exact match | 8 contacts → |
“Stronium was incorporated in 2004 and is an independent private limited company incorporated in Malaysia and wholly owned and operated by Malaysians.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Tentristentris.ioHQ: Bielefeld, GermanyReported employees: 1-10 | Bielefeld, Germany | 1-10 | Exact match | 7 contacts → |
“TentrisDB drastically reduces RAM consumption by executing analytical graph queries in a fundamentally different way than traditional graph databases.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Ontopicontopic.aiHQ: Bolzano, ItalyReported employees: 1-10 | Bolzano, Italy | 1-10 | Exact match | 7 contacts → |
“Ontopic Studio is a no-code environment for creating maintainable Knowledge Graphs of any scale and complexity from existing data.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Perfect Driveperfect-drive.nlHQ: Heemskerk, NetherlandsReported employees: 1-10 | Heemskerk, Netherlands | 1-10 | Exact match | 6 contacts → |
“Perfect Drive | BrAIns on Top of AI™ At Perfect Drive, we believe artificial intelligence needs intelligence.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  graph.buildgraph.buildHQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 6 contacts → |
“Build enterprise Knowledge Graphs ready for operational use in days, not months or years.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Semantrixsemantrix.com.auHQ: Invermay, AustraliaReported employees: 1-10 | Invermay, Australia | 1-10 | Exact match | 6 contacts → |
“Semantrix (Sales) and Semantrix Research (R&D)- Intelligent Sensing Systems for Hard Environments We build AI-powered sensor platforms that protect people, reduce waste, and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Synaptasynapta.itHQ: Turin, ItalyReported employees: 11-50 | Turin, Italy | 11-50 | Exact match | 6 contacts → |
“Synapta Srl is an Italian innovative start-up based in Turin.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Atomrain, INCatomrain.comHQ: Santa Monica, CA, United StatesReported employees: 11-50 | Santa Monica, CA, United States | 11-50 | Exact match | 6 contacts → |
“AtomRain provides a unique blend of strategy & technical with a unique combination of knowledge graph and artificial intelligence expertise to make possible what your business…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Zenia Graphzeniagraph.aiHQ: Clifton, NJ, United StatesReported employees: 1-10 | Clifton, NJ, United States | 1-10 | Exact match | 6 contacts → |
“Zenia Graph is a knowledge graph consulting firm enabling businesses to transform data by unleashing the power of the semantic knowledge graph.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 151 company matches
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Semantic web companies: dataset insights
November 6, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
151 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 151 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 6, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Semantic web companies by location
1 lists · largest firstEvery Semantic web companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Questions about this company list
What does Exact match mean for semantic web companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many semantic web companies did RevenueBase find worldwide?
The saved snapshot records 151 matching company records, 948 tracked contacts and 254 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 6, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
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Cite this list
RevenueBase Data Team. Top 25 semantic web companies worldwide. Snapshot: November 6, 2026. https://revenuebase.ai/companies/browse/semantic-web-companies.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
Company intelligence · public preview
Top 25 semantic web companies worldwide
RevenueBase records 151 matching company records for semantic web companies worldwide, with 948 tracked contacts and 254 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 6, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 semantic web companies worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Ontology Engineering Group UPMoeg.fi.upm.es HQ: Boadilla Del Monte, SpainReported employees: 11-50 | Boadilla Del Monte, Spain | 11-50 | Exact match | 45 contacts → |
“The Ontology Engineering Group (OEG) is under the direction of Professor Asunción Gómez-Pérez and Professor Oscar Corcho The OEG -based in the ETSIINF at UPM- research in the…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Metaphacts Gmbhmetaphacts.com HQ: Walldorf, GermanyReported employees: 11-50 | Walldorf, Germany | 11-50 | Exact match | 41 contacts → |
“metaphacts is an AI-first knowledge graph company helping global enterprises transform data into consumable, contextual and actionable knowledge.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Topquadranttopquadrant.com HQ: Raleigh, NY, United StatesReported employees: 11-50 | Raleigh, NY, United States | 11-50 | Exact match | 39 contacts → |
“TopQuadrant turns complex data into AI-ready data foundations for the world’s largest enterprises.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Franz INCfranz.com HQ: Lafayette, CA, United StatesReported employees: 11-50 | Lafayette, CA, United States | 11-50 | Exact match | 35 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 5 | Ontotextontotext.com HQ: Sofia, BulgariaReported employees: 51-200 | Sofia, Bulgaria | 51-200 | Exact match | 33 contacts → |
“Ontotext is a global leader in semantic technology and knowledge graph solutions.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Cognizonecogni.zone HQ: Ixelles, BelgiumReported employees: 11-50 | Ixelles, Belgium | 11-50 | Exact match | 33 contacts → |
“Cognizone is a startup of several ICT engineers, experienced in different computer science disciplines, working with data and semantics for the last 15 years, providing industrial…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Semantic Arts, INCsemanticarts.com HQ: Fort Collins, CO, United StatesReported employees: 11-50 | Fort Collins, CO, United States | 11-50 | Exact match | 26 contacts → |
“Semantic Arts is a professional services firm that specializes in helping organizations overcome integration debt by leveraging semantics and graph databases.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Spaziodati SRLspaziodati.eu HQ: ItalyReported employees: 11-50 | Italy | 11-50 | Exact match | 21 contacts → |
“By leveraging Big Data, Machine Learning & Semantic Web techs we are building a high-quality knowledge-graph derived from hundreds of sources.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Semantic Partnerssemanticpartners.com HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 20 contacts → |
“We build Knowledge Graphs using RDF, semantic tech and ontology development.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | MAANAsparkcognition.com HQ: Palo Alto, CA, United StatesReported employees: 201-500 | Palo Alto, CA, United States | 201-500 | Exact match | 18 contacts → |
“SparkCognition acquired Maana on July 1, 2021.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Empolis Intelligent Viewsempolis.com HQ: Darmstadt, GermanyReported employees: 11-50 | Darmstadt, Germany | 11-50 | Exact match | 16 contacts → |
“Die Empolis Intelligent Views GmbH zählt mit ihrer Knowledge-Graph-Plattform zu den führenden Anbietern semantischer Technologien und wissensbasierter KI im deutschsprachigen Raum.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Epimorphics LTDepimorphics.com HQ: Bristol, United KingdomReported employees: 11-50 | Bristol, United Kingdom | 11-50 | Exact match | 15 contacts → |
“Founded in 2009, Epimorphics are at forefront of developing standards, tools and applications, working with organisations to organise and publish data.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Klarso Gmbhklarso.com HQ: Berlin, GermanyReported employees: 1-10 | Berlin, Germany | 1-10 | Exact match | 12 contacts → |
“We are klarso - Let us make one thing clear: your data.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Srdc Softwaresrdc.com.tr HQ: Cankaya, TürkiyeReported employees: 11-50 | Cankaya, Türkiye | 11-50 | Exact match | 12 contacts → |
“SRDC Software Research & Development and Consultancy Corp, established in 2007, is a spin-off company of the Middle East Technical University (METU), Software Research and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Semandex Networkssemandex.com HQ: Princeton, NJ, United StatesReported employees: 11-50 | Princeton, NJ, United States | 11-50 | Exact match | 11 contacts → |
“Semandex has pioneered the application of semantic technology for government and business solutions.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Mobilus Interactivemobilus-interactive.com HQ: Bandung, IndonesiaReported employees: 1-10 | Bandung, Indonesia | 1-10 | Exact match | 9 contacts → |
“We are a fast growing IT Service Company based in Bandung, Indonesia.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Stronium SDN BHDstronium.com HQ: Kuala Lumpur, MalaysiaReported employees: 1-10 | Kuala Lumpur, Malaysia | 1-10 | Exact match | 8 contacts → |
“Stronium was incorporated in 2004 and is an independent private limited company incorporated in Malaysia and wholly owned and operated by Malaysians.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Tentristentris.io HQ: Bielefeld, GermanyReported employees: 1-10 | Bielefeld, Germany | 1-10 | Exact match | 7 contacts → |
“TentrisDB drastically reduces RAM consumption by executing analytical graph queries in a fundamentally different way than traditional graph databases.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Ontopicontopic.ai HQ: Bolzano, ItalyReported employees: 1-10 | Bolzano, Italy | 1-10 | Exact match | 7 contacts → |
“Ontopic Studio is a no-code environment for creating maintainable Knowledge Graphs of any scale and complexity from existing data.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Perfect Driveperfect-drive.nl HQ: Heemskerk, NetherlandsReported employees: 1-10 | Heemskerk, Netherlands | 1-10 | Exact match | 6 contacts → |
“Perfect Drive | BrAIns on Top of AI™ At Perfect Drive, we believe artificial intelligence needs intelligence.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | graph.buildgraph.build HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 6 contacts → |
“Build enterprise Knowledge Graphs ready for operational use in days, not months or years.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Semantrixsemantrix.com.au HQ: Invermay, AustraliaReported employees: 1-10 | Invermay, Australia | 1-10 | Exact match | 6 contacts → |
“Semantrix (Sales) and Semantrix Research (R&D)- Intelligent Sensing Systems for Hard Environments We build AI-powered sensor platforms that protect people, reduce waste, and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Synaptasynapta.it HQ: Turin, ItalyReported employees: 11-50 | Turin, Italy | 11-50 | Exact match | 6 contacts → |
“Synapta Srl is an Italian innovative start-up based in Turin.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Atomrain, INCatomrain.com HQ: Santa Monica, CA, United StatesReported employees: 11-50 | Santa Monica, CA, United States | 11-50 | Exact match | 6 contacts → |
“AtomRain provides a unique blend of strategy & technical with a unique combination of knowledge graph and artificial intelligence expertise to make possible what your business…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Zenia Graphzeniagraph.ai HQ: Clifton, NJ, United StatesReported employees: 1-10 | Clifton, NJ, United States | 1-10 | Exact match | 6 contacts → |
“Zenia Graph is a knowledge graph consulting firm enabling businesses to transform data by unleashing the power of the semantic knowledge graph.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 151 company matches
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Semantic web companies: dataset insights
November 6, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
151 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 151 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 6, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Semantic web companies by location
1 lists · largest firstEvery Semantic web companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Questions about this company list
What does Exact match mean for semantic web companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many semantic web companies did RevenueBase find worldwide?
The saved snapshot records 151 matching company records, 948 tracked contacts and 254 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 6, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
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Cite this list
RevenueBase Data Team. Top 25 semantic web companies worldwide. Snapshot: November 6, 2026. https://revenuebase.ai/companies/browse/semantic-web-companies.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗