Company lists · Data refreshed September 2026
Top 25 AI note taker companies based in the United States
RevenueBase identified 84 AI note taker companies headquartered in the United States as of September 2026 and tracks 1,367 professional contacts across them, including 431 with verified work emails and 402 with mobile numbers. San Francisco is the largest hub.
This list covers AI note taker 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 2, 2026.
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 AI note taker companies based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 249 contacts → | ||||
Partial evidence “Otter.ai is the Conversational Knowledge Engine built for the modern enterprise, giving AI agents the organizational context to act on by connecting thousands of conversations…” Source: RevenueBase Database · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 2 | 148 contacts → | ||||
Strong evidence “Plaud is building the world's most trusted AI work companion for professionals to elevate productivity and performance through note-taking solutions, loved by over users worldwide…” Source: RevenueBase Database · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 3 | 116 contacts → | ||||
Partial evidence “Fathom is a free app that records, transcribes, and summarizes your Zoom, Google Meet or Microsoft Teams meetings so you can focus on the conversation instead of taking notes.” Source: RevenueBase Database · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 4 | 105 contacts → | ||||
Indirect evidence “We build simple, powerful tools that help people work better, smarter.” Source: RevenueBase Database · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 5 | 90 contacts → | ||||
Partial evidence “Read AI is an AI copilot for wherever you work, making your meetings, emails, and messages more productive with summaries, content discovery, and recommendations.” Source: RevenueBase Database · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 6 | 43 contacts → | ||||
Partial evidence “TwinMind is your AI second brain powered by what you hear and see.” Source: RevenueBase Database · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 7 | 39 contacts → | ||||
Partial evidence “Mindgrasp instantly creates accurate notes and answers questions from any Document, PDF, YouTube Video, Zoom Meeting, Webinar Recording, Podcast and much more!” Source: RevenueBase Database · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 8 | 31 contacts → | ||||
Partial evidence “Sembly AI is a pioneering company in the field of Augmented Worker Intelligence, dedicated to enhancing productivity and efficiency in the modern workplace.” Source: RevenueBase Database · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 9 | 30 contacts → | ||||
Partial evidence “Trusted By Teams Grain automates note-taking so you can focus on the big picture.” Source: RevenueBase Database · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 10 | 25 contacts → | ||||
Partial evidence “Willow is an AI dictation app that writes anywhere on your computer.” Source: RevenueBase Database · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 11 | 16 contacts → | ||||
Partial evidence “mymeet.ai is an AI meeting assistant that turns every call into a structured summary, action items, and a follow-up, automatically.” Source: RevenueBase Database · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 12 | 15 contacts → | ||||
Indirect evidence “From back-to-back meetings to high-speed dictation.” Source: RevenueBase Database · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 13 | 13 contacts → | ||||
Strong evidence “Heyday is an AI thought partner that turns your conversations into notes, reading into quotes, and ideas into posts.” Source: RevenueBase Database · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 14 | 10 contacts → | ||||
Indirect evidence “Backed by Techstars, Sonnet is an end-to-end meeting assistant, combining a human-quality notetaker with an auto-updating CRM.” Source: RevenueBase Database · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 15 | 8 contacts → | ||||
Strong evidence “Voice first AI for notes, meetings, tasks and network.” Source: RevenueBase Database · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 16 | 8 contacts → | ||||
Indirect evidence “Reelay doesn’t just automate busywork, it reshapes how your company meets, collaborates, and operates.” Source: RevenueBase Database · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 17 | 7 contacts → | ||||
Strong evidence “Equal Time is an AI meeting assistant that delivers best in class meeting notes, action items, and tracks decisions.” Source: RevenueBase Database · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 18 | 6 contacts → | ||||
Partial evidence “Huudle AI meeting assistant that connects all meetings around the same topic in a single space.” Source: RevenueBase Database · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 19 | 6 contacts → | ||||
Partial evidence “Welcome to XNote – the future of note-taking and productivity.” Source: RevenueBase Database · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 20 | 5 contacts → | ||||
Strong evidence “Tired of generic note-taking AI apps?” Source: RevenueBase Database · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 21 | 5 contacts → | ||||
Indirect evidence “Easy access to knowledge, happy experience in research.” Source: RevenueBase Database · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 22 | 5 contacts → | ||||
Partial evidence “KnowNotes is the AI assistant for students.” Source: RevenueBase Database · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 23 | 4 contacts → | ||||
Indirect evidence “Your own copilot.” Source: RevenueBase Database · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 24 | 4 contacts → | ||||
Indirect evidence “As of September 6, 2019, Voicea was acquired by Cisco Systems Voicera is the voice collaboration platform that "Turns Talk Into Action".” Source: RevenueBase Database · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 25 | 4 contacts → | ||||
Partial evidence “Automate your Notes for meetings, lectures, or presentations.” Source: RevenueBase Database · checked Sep 2, 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: AI note taker 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 AI note taker companies.
- Partial evidence
- Its own public description names part of AI note taker companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name AI note taker 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 84 AI note taker companies based in the United States
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AI note taker companies based in the United States at a glance
As of Sep 2, 2026Companies by employee count
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 AI note taker 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.
- What qualifies
- Companies headquartered in the United States whose own description of what they do matches “AI note taker 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 AI note taker 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 AI note taker 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 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, 431 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 2, 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.
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 AI note taker 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 AI note taker companies are there based in the United States?
RevenueBase identified 84 AI note taker 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?
otter.ai, headquartered in Mountain View, tops this list with the largest team on record.
Which city has the most AI note taker companies?
San Francisco leads with 21 headquartered companies, followed by New York (10) and San Jose (4).
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 431 verified decision-maker contacts tracked across these 84 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 2, 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.
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