Company lists · Data refreshed October 2026

Top 25 Open source AI software companies worldwide

RevenueBase identified 653 company matches for open source AI software companies worldwide as of October 2026 and tracks 5,115 professional contacts across them, including 969 with verified work emails. The United States is the largest market and San Francisco the largest hub.

This list covers company matches for open source AI software 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 October 1, 2026. Country and city lists for open source AI software 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Oct 1, 2026 How this list was built
653Companies
5,115Contacts tracked
969Verified emails
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The 25 largest open source AI software companies worldwide

Ranked by team size
Top 25 of 653 company matches for open source AI software companies worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 1, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchSan Jose, CA, United StatesHQ recorded Oct 1, 20261,001-5,000422 contacts →

Exact match

“Tuya Inc.(NYSE: TUYA; HKEX: 2391) is a leading global AI cloud platform service provider dedicated to bringing AI into everyday life.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
2Exact matchMountain View, CA, United StatesHQ recorded Oct 1, 2026201-500405 contacts →

Exact match

“Founded in 2012, H2O.ai is on a mission to democratize AI.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
3Exact matchSan Francisco, CA, United StatesHQ recorded Oct 1, 202611-50126 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
4Exact matchLewes, DE, United KingdomHQ recorded Oct 1, 202651-200104 contacts →

Exact match

“John Snow Labs, the AI for Healthcare company, provides state-of-the-art software, language models, and data to help healthcare and life science organizations build, deploy, and…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
5Exact match서울특별시, South KoreaHQ recorded Oct 1, 202651-20099 contacts →

Exact match

“With the growing interest in LLMs and multimodal AI, many companies and people are struggling to construct and utilize large-scale AI infrastructure with thousands or more…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
6Exact matchBerlin, GermanyHQ recorded Oct 1, 202651-20091 contacts →

Exact match

“deepset is the creator of the open-source Haystack AI orchestration framework and the Haystack Enterprise Platform.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
7Exact matchMontreal, CA, CanadaHQ recorded Oct 1, 2026n/a86 contacts →

Exact match

“ServiceNow AI Research: shaping the future of work with AI At ServiceNow, we’re putting AI to work for people.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
8Exact matchNew York, NY, United StatesHQ recorded Oct 1, 202611-5085 contacts →

Exact match

“ibl.ai is a sovereign AI operating system for organizations that need to own their AI infrastructure, not rent it.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
9Exact matchBoston, MA, United StatesHQ recorded Oct 1, 202651-20084 contacts →

Exact match

“Humanitarians AI exists to make a positive global impact through ethical, open-source AI solutions.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
10Exact matchWilmington, DE, United StatesHQ recorded Oct 1, 202611-5069 contacts →

Exact match

“Adya is a full-stack Enterprise Agentic AI Operating System that compresses months of software and AI development into weeks.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
11Exact matchLondon, United KingdomHQ recorded Oct 1, 202651-20055 contacts →

Exact match

“Ultralytics is a leading AI company dedicated to creating transformative, open-source computer vision solutions.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
12Exact matchSunnyvale, United StatesHQ recorded Oct 1, 202611-5047 contacts →

Exact match

“We build AI for data and analytics engineering.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
13Exact matchLeuven, BelgiumHQ recorded Oct 1, 202651-20047 contacts →

Exact match

“AI Planet was started in 2020 with a vision of making AI accessible to everyone.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
14Exact matchUnited StatesHQ recorded Oct 1, 202651-20045 contacts →

Exact match

“Democratizing AI Across Industries Through Enterprise-Grade Solutions at SME-Friendly Prices Nubes Opus LLC is the leading AI-as-a-Service provider with 7+ years of proven…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
15Exact matchSan Francisco, United StatesHQ recorded Oct 1, 202611-5043 contacts →

Exact match

“Building an AI agent is easy.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
16Exact matchDubai, United Arab EmiratesHQ recorded Oct 1, 202611-5041 contacts →

Exact match

“Amperor is a software solution company dedicated to ai-fying your ideas technically.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
17Exact match新宿区, JapanHQ recorded Oct 1, 202611-5037 contacts →

Exact match

“Natural language processing and research and development, sale, introduction of the software using the machine learning and support.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
18Exact matchSanta Cruz, United StatesHQ recorded Oct 1, 202611-5034 contacts →

Exact match

“Semiconductor manufacturers and fabs can no longer afford to innovate at the pace humans alone can sustain.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
19Exact matchAustin, TX, United StatesHQ recorded Oct 1, 202611-5032 contacts →

Exact match

“Nous Research is an AI research lab creating world-class open source AI.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
20Exact matchBellevue, WA, United StatesHQ recorded Oct 1, 2026n/a31 contacts →

Exact match

“Every company is becoming an AI company.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
21Exact matchDarmstadt, GermanyHQ recorded Oct 1, 202611-5031 contacts →

Exact match

“The UKP Lab carries out cutting-edge research in deep learning for natural language processing (NLP) with a strong emphasis on conversational AI, question answering…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
22Exact matchSan Francisco, United StatesHQ recorded Oct 1, 202611-5029 contacts →

Exact match

“Essential AI is on a mission to make frontier AI more accessible through an open, collaborative platform.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
23Exact matchAnn Arbor, MI, United StatesHQ recorded Oct 1, 202611-5028 contacts →

Exact match

“Jaseci Labs is composed of a team of AI professors, Ph.D.s and industry experts with a proven track record of developing and launching award-winning AI products for millions of…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
24Exact match松山區, TaiwanHQ recorded Oct 1, 202611-5027 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
25Exact matchUnited StatesHQ recorded Oct 1, 202611-5025 contacts →

Exact match

“HPC-AI Tech is a startup focusing on improving the efficiency of enterprise AI model training and deployment.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase

Showing 25 of 653 open source AI software companies worldwide

See the full list, filter by size, metro and specialty, and access 969 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Open source AI software companies worldwide at a glance

As of Oct 1, 2026
18.9%Verified-email coverage
7.8Average contacts per company
1-10Median size (employees)
4.1%Largest-city concentration · San Francisco
Oct 1, 2026Page data refreshed

Companies by employee count

1-10
452
11-50
154
51-200
30
201-500
7
501-1,000
1
1,001-5,000
3
5,001-10,000
2
10001+
2

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 open source AI software companies are linked below.
What qualifies
Company records worldwide whose business descriptions match “open source AI software 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 969 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 October 1, 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.

Open source AI software companies by location

2 lists · largest first

Every Open source AI software companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 “open source AI software companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many open source AI software companies are there worldwide?

RevenueBase identified 653 company matches for open source AI software companies worldwide as of October 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?

Tuya Smart tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most open source AI software companies?

The United States leads with 146 companies. Every open source AI software companies list by country and city is linked on this page.

Which city has the most open source AI software companies?

San Francisco leads with 27 company records, followed by Bangalore (17) and London (15).

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 969 professional contacts with verified work emails tracked across these 653 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 October 1, 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 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.