Company lists · Data refreshed September 2026
Top 25 Open source AI software companies based in the United States
RevenueBase identified 146 open source AI software companies headquartered in the United States as of September 2026 and tracks 2,214 professional contacts across them, including 519 with verified work emails and 370 with mobile numbers. San Francisco is the largest hub.
This list covers open source AI software companies headquartered in the United States, 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, how directly it supports the match, and when it was last checked. Data refreshed September 5, 2026.
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 open source AI software companies based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 422 | ||||
“Tuya Inc.(NYSE: TUYA; HKEX: 2391) is a leading global AI cloud platform service provider dedicated to bringing AI into everyday life.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 2 | 405 | ||||
“Founded in 2012, H2O.ai is on a mission to democratize AI.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 3 | Thinking Machines LABIndirect evidence | 126 | |||
Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 4 | ibl.aiPartial evidence | 85 | |||
“ibl.ai is a sovereign AI operating system for organizations that need to own their AI infrastructure, not rent it.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 5 | 84 | ||||
“Humanitarians AI exists to make a positive global impact through ethical, open-source AI solutions.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 6 | 69 | ||||
“Adya is a full-stack Enterprise Agentic AI Operating System that compresses months of software and AI development into weeks.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 7 | 32 | ||||
“Nous Research is an AI research lab creating world-class open source AI.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 8 | 31 | ||||
“Every company is becoming an AI company.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 9 | 29 | ||||
“Essential AI is on a mission to make frontier AI more accessible through an open, collaborative platform.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 10 | 28 | ||||
“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…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 11 | SonasoftPartial evidence | 22 | |||
“Sonasoft Corp.(SSFT) is an AI-first company.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 12 | 19 | ||||
“Promptfoo is the leading open-core platform for AI application security, enabling enterprises to identify and remediate vulnerabilities in LLMs, RAG systems, and AI agents before…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 13 | 19 | ||||
“Transluce is an independent research lab that builds open, scalable technology for understanding AI systems and steering them in the public interest.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 14 | 19 | ||||
“Vy Labs is an innovative Artificial Intelligence research and development company committed to making AI accessible to everyone.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 15 | 15 | ||||
“NotedSource is the end-to-end AI OS for corporate R&D.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 16 | 14 | ||||
“HelloGov® is a privately-held Artificial Intelligence (AI) company founded by former Machine Learning (ML) Researchers and Engineers from OpenAI, Tensorflow and the U.S.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 17 | 13 | ||||
“Bud Ecosystem is an AI research company specializing in multi-modal Generative AI.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 18 | AinekkoStrong evidence | 13 | |||
“A 100% open-source company on a mission to democratize how the AI community collaborates on models, datasets, and applications so that the AI of AI has more choices than just a…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 19 | 11 | ||||
“POIETO is a woman-owned, BIPOC-led AI company dedicated to building collective intelligence for a more creative and responsible AI future.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 20 | YITECPartial evidence | 10 | |||
“YITEC is a Global AI Research Development and Consulting Company.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 21 | 8 | ||||
“Located in Oak Park, Michigan, Detect-It is an AI Software and Neural Net Technology company.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 22 | Kitware INCStrong evidence | 6 | |||
“Kitware delivers innovation to its customers through custom software solutions built on open source technology and advanced AI.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 23 | 6 | ||||
“Bryllyant is an AI company whose flagship product, XipHub, is an AI operating system designed for enterprises.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 24 | ResolvïqPartial evidence | 6 | |||
“ResolvÏQ is an agile cloud-native software development company that specializes in artificial intelligence solutions.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 25 | OpenfoldStrong evidence | 6 | |||
“Community-governed, open source initiative building AI technology for molecular systems” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 146 open source AI software companies based in the United States
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 519 reachable decision-makers.
Free signup · no credit card
Open source AI software companies based in the United States at a glance
As of Sep 5, 2026Companies by employee count
Verified emails by last verification
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 open source AI software companies, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in the United States whose own description of what they do matches “open source AI software companies”. Matching reads each company's description, not its industry code or its name.
- What we exclude
- Companies whose own description does not clearly place them among open source AI software companies, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
- 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 an evidence 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, 519 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 5, 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.
Open source AI software companies by metro
- Open source AI software companies in San Francisco27
Frequently asked
How many open source AI software companies are there based in the United States?
RevenueBase identified 146 open source AI software companies headquartered in the United States 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?
Tuya Smart, headquartered in San Jose, tops this list with the largest team on record.
Which city has the most open source AI software companies?
San Francisco leads with 27 headquartered companies, followed by New York (9) and Austin (5).
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 519 verified decision-maker contacts tracked across these 146 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 5, 2026.
Ready to reach these companies? Verified emails and direct dials for all 146 open source AI software companies based in the United States. Start with a free account, no credit card.
Get the full listRelated lists
Browse the directory
Browse: Companies home · All United States lists · All Open source AI software companies lists · New lists
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
- All company lists
- Lists by location
- Lists A-Z
- New lists
- AI companies based in the United States
- Cybersecurity companies based in the United States
- Manufacturing companies based in the United States
- Media companies based in the United States
- Oil and gas companies based in the United States
- Real estate companies based in the United States