Company lists · Data refreshed September 2026
Top 25 Knowledge extraction companies worldwide
RevenueBase identified 595 knowledge extraction companies worldwide as of September 2026 and tracks 6,734 professional contacts across them, including 1,400 with verified work emails. The United States is the largest market and London the largest hub.
This list covers knowledge extraction companies worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 20, 2026. Country and city lists for knowledge extraction companies follow the table.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 knowledge extraction companies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,174 contacts → | ||||
Indirect evidence “HP Autonomy, is a global leader in software that processes human information, or unstructured data, including social media, email, video, audio, text and web pages, etc.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 2 | 481 contacts → | ||||
Indirect evidence “Nuix creates innovative software that empowers organizations to simply and quickly find the truth from any data in a digital world.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 3 | 138 contacts → | ||||
Indirect evidence “Founded in 2002, SciTech Patent Art Services is India's oldest dedicated patent search firm-a distinction earned over two decades of delivering world-class IP research, and…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 4 | 128 contacts → | ||||
Partial evidence “Sinequa by ChapsVision helps large organizations turn Entreprise Knowledge into actionable intelligence with AI and GenAI.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 5 | 124 contacts → | ||||
Partial evidence “We build and run custom, fully managed data extraction pipelines for companies whose products, research, and AI systems depend on external data.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 6 | 108 contacts → | ||||
Indirect evidence “Grepsr helps enterprises extract reliable web data at scale without building scrapers, managing infrastructure, or fighting anti-bot systems.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 7 | 73 contacts → | ||||
Indirect evidence “Recommind was acquired by OpenText in July 2016.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 8 | 72 contacts → | ||||
Indirect evidence “Brightleaf provides a AI-powered service to extract information from your contracts using our own proprietary semantic intelligence/natural language processing technology, our own…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 9 | 65 contacts → | ||||
Partial evidence “Cogniquest is a technology company specialized in developing solutions for extraction of insights.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 10 | 58 contacts → | ||||
Indirect evidence “Every day, companies and government agencies generate huge amounts of data, distributed across emails, file storage systems, specialist applications, cloud services, and databases.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 11 | 58 contacts → | ||||
Indirect evidence “VERBI Software empowers researchers and analysts with innovative solutions for qualitative and mixed methods data analysis.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 12 | 58 contacts → | ||||
Indirect evidence “As China regains its prominence on the world stage as an economic colossus, our mission is to extract, synthesize and deliver premium data to aid global capital navigate its…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 13 | 54 contacts → | ||||
Indirect evidence “Futurlytic Private Limited is a data analytics company focused on turning unstructured data into clear, business-ready intelligence.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 14 | 48 contacts → | ||||
Indirect evidence “The biggest bottleneck in modern business isn't analysing data.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 15 | 45 contacts → | ||||
Indirect evidence “SciBite’s data-first, semantic analytics software is for those who want to innovate and get more from their data.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 16 | 45 contacts → | ||||
Indirect evidence “Somos uma Empresa de Desenvolvimento de Software e soluções baseadas em Inteligência Artificial especializada em extrair, estruturar e convalidar base de dados, para geração de…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 17 | 36 contacts → | ||||
Partial evidence “DXwand's Knowledge Mining and Generative AI technology helps businesses embark below capabilities to streamline and automate their customer service conversations and unlock…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 18 | 35 contacts → | ||||
Indirect evidence “Flexor turns enterprise unstructured data like emails, docs and calls into the business context AI needs to succeed.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 19 | 35 contacts → | ||||
Indirect evidence “At Finch AI, we think like analysts.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 20 | 34 contacts → | ||||
Indirect evidence “Welcome to listening247!” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 21 | 34 contacts → | ||||
Indirect evidence “Silk Data was founded by PhD-titled experts with 80 years of combined academic and business experience, to help companies automate routine tasks and improve their digital products…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 22 | 32 contacts → | ||||
Indirect evidence “Erre Quadro is a research-driven company, specialized in the development of cognitive engines for automatic analysis of technical documentation.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 23 | 32 contacts → | ||||
Partial evidence “Claro is a multi-faceted Knowledge Process Outsourcing company with diverse experience in data and expertise in various projects.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 24 | 30 contacts → | ||||
Indirect evidence “Zmieniamy dane w wiedzę.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 25 | 30 contacts → | ||||
Indirect evidence “AMPLYFI’s AI-powered research platform connects structured and unstructured data at scale, to uncover previously hidden links, trends and opportunities.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: knowledge extraction companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names knowledge extraction companies.
- Partial evidence
- Its own public description names part of knowledge extraction companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name knowledge extraction companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 595 knowledge extraction companies worldwide
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Knowledge extraction companies worldwide at a glance
As of Sep 20, 2026Companies by employee count
Email recency is reported on each country list linked below.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among knowledge extraction companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- Coverage
- Every country. Country and city lists for knowledge extraction companies are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “knowledge extraction companies”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names knowledge extraction companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among knowledge extraction companies, and records with no verified work email.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- 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 listed company carries at least one verified work email, 1,400 across the full list. 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 September 20, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Knowledge extraction companies by location
3 lists · largest firstEvery Knowledge extraction 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 Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names knowledge extraction companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many knowledge extraction companies are there worldwide?
RevenueBase identified 595 knowledge extraction companies worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
HP Autonomy, headquartered in Cambridge, tops this list with the largest team on record.
Which country has the most knowledge extraction companies?
The United States leads with 154 companies, followed by India (50) and the United Kingdom (37). Every knowledge extraction companies list by country and city is linked on this page.
Which city has the most knowledge extraction companies?
London leads with 20 headquartered companies, followed by New York (18) and Paris (11).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 1,400 verified decision-maker contacts tracked across these 595 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 20, 2026.
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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 Smart Search, 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.