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, how directly it supports the match, 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 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 AI note taker companies based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 249 | ||||
“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: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 2 | PLAUDStrong evidence | 148 | |||
“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: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 3 | FathomPartial evidence | 116 | |||
“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: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 4 | NotabilityIndirect evidence | 105 | |||
“We build simple, powerful tools that help people work better, smarter.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 5 | Read AIPartial evidence | 90 | |||
“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: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 6 | TwinmindPartial evidence | 43 | |||
“TwinMind is your AI second brain powered by what you hear and see.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 7 | MindgraspPartial evidence | 39 | |||
“Mindgrasp instantly creates accurate notes and answers questions from any Document, PDF, YouTube Video, Zoom Meeting, Webinar Recording, Podcast and much more!” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 8 | 31 | ||||
“Sembly AI is a pioneering company in the field of Augmented Worker Intelligence, dedicated to enhancing productivity and efficiency in the modern workplace.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 9 | 30 | ||||
“Trusted By Teams Grain automates note-taking so you can focus on the big picture.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 10 | 25 | ||||
“Willow is an AI dictation app that writes anywhere on your computer.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 11 | mymeet.aiPartial evidence | 16 | |||
“mymeet.ai is an AI meeting assistant that turns every call into a structured summary, action items, and a follow-up, automatically.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 12 | LAXISIndirect evidence | 15 | |||
“From back-to-back meetings to high-speed dictation.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 13 | 13 | ||||
“Heyday is an AI thought partner that turns your conversations into notes, reading into quotes, and ideas into posts.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 14 | Sonnet AI INCIndirect evidence | 10 | |||
“Backed by Techstars, Sonnet is an end-to-end meeting assistant, combining a human-quality notetaker with an auto-updating CRM.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 15 | 8 | ||||
“Voice first AI for notes, meetings, tasks and network.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 16 | ReelayIndirect evidence | 8 | |||
“Reelay doesn’t just automate busywork, it reshapes how your company meets, collaborates, and operates.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 17 | 7 | ||||
“Equal Time is an AI meeting assistant that delivers best in class meeting notes, action items, and tracks decisions.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 18 | 6 | ||||
“Huudle AI meeting assistant that connects all meetings around the same topic in a single space.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 19 | XNOTEPartial evidence | 6 | |||
“Welcome to XNote – the future of note-taking and productivity.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 20 | Quill MeetingsStrong evidence | 5 | |||
“Tired of generic note-taking AI apps?” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 21 | OpenreadIndirect evidence | 5 | |||
“Easy access to knowledge, happy experience in research.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 22 | KnownotesPartial evidence | 5 | |||
“KnowNotes is the AI assistant for students.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 23 | BroadcastIndirect evidence | 4 | |||
“Your own copilot.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 24 | 4 | ||||
“As of September 6, 2019, Voicea was acquired by Cisco Systems Voicera is the voice collaboration platform that "Turns Talk Into Action".” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 25 | NotesightPartial evidence | 4 | |||
“Automate your Notes for meetings, lectures, or presentations.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
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 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 “AI note taker 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 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 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, 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
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 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.
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