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Technologies / Fathom / OpenAI

Companies using Fathom and OpenAI

25 companies in our data have public evidence for both Fathom and OpenAI, and 19 name both in their own subprocessor list. Each company below links to the source for every claim. Our coverage is partial, so this is not everyone.

25companies use both
45%of Fathom users
1%of OpenAI users
19name both as subprocessors

Companies using one are 3.2 times as likely as the average company in our data to show evidence of the other.

The companies

Strongest evidence first: a company naming both in its own subprocessor list comes before one seen on its website or in job postings.

Subprocessor listPrivacy policyWebsiteJob postings

CompanyFathomOpenAI
AiSDRaisdr.comAiSDR provides AI sales software that finds prospects and sends automated outreach emails to book meetings.AI and machine learningSales
Circlecircle.soCircle provides a platform for building online communities, events, and courses under a customer's own brand.
CloseIntelcloseintel.aiCloseIntel provides an AI sales improvement system that grades sales calls against a company's own sales process, ramps new hires, and trains sales professionals on their gaps.AI and machine learningSales
Critical Cloudcriticalcloud.aiCritical Cloud provides managed runtime assurance, monitoring, incident response and Datadog observability services for software and AI workloads.Cloud and infrastructureConsulting and services
Dockdock.usDock provides a revenue enablement platform with AI agents for building buyer workspaces, managing sales content, and training teams.AI and machine learningProductivity and collaboration
ed.linkEdlink provides a unified API that helps edtech companies build and scale integrations with learning management systems and student information systems.Developer toolsEducation
FranConnectfranconnect.comFranConnect provides an AI-powered franchise management platform that connects development, openings, training, operations, performance, quality and royalties in one system.
Frecklefreckle.ioFreckle provides a CLI for running GTM workflows and enrichments from the terminal.Sales
Groundswellgroundswell.ioGroundswell provides corporate social impact software for managing employee giving, matching, volunteering, grants, and employee assistance programs in one platform.
Incompassincompass.ioIncompass provides a performance management and 360 feedback platform that gathers input from across teams and calibrates it with data science.HR and recruiting
Loadsmartloadsmart.comLoadsmart provides an AI-native transportation management platform and freight services that automate tasks like dock scheduling, tracking, and document collection.Logistics and supply chain
Novi AMSnoviams.comNovi AMS provides association management software that integrates with QuickBooks.
Prerenderprerender.ioPrerender.io converts website pages to HTML so search engines, AI systems, and social platforms can read them.Developer toolsMarketing
Scytalescytale.aiScytale provides an AI GRC platform that automates compliance and continuous control monitoring across security, privacy, and AI frameworks.Compliance and riskCybersecurity
Sendmarcsendmarc.comSendmarc provides a platform for managing DMARC, SPF, and DKIM email authentication across domains.Cybersecurity
SpotDraftspotdraft.comSpotDraft provides a contract management platform that drafts, reviews, and tracks contracts.Legal
Telnyxtelnyx.comTelnyx provides a cloud platform combining its own licensed carrier network with edge compute and GPU infrastructure, offering inference, voice, messaging, storage and wireless connectivity on one bill.AI and machine learningCloud and infrastructure
Verseverse.incVerse provides faster grid interconnection and a platform to control and dispatch energy assets.Energy and climate
Yonda Taxyondatax.comYonda provides managed sales tax and VAT compliance services, including registration, calculation, filing and remittance, through a platform with integrations such as Shopify and Stripe.Compliance and riskE-commerce
Add to CRMaddtocrm.comAdd to CRM is a Chrome extension that finds verified email addresses and phone numbers from LinkedIn, Gmail, and Outlook profiles and adds them to a connected CRM.Sales
Fusewisefusewise.comFusewise provides AI-native legal due diligence for M&A transactions, using legal agents to analyze data room documents and produce a source-linked red-flag report.AI and machine learningLegal
levelpartner.aiLevelpartner.ai is an AI automation agency that provides AI systems, CRM and automation for established companies with 10 to 250 staff.AI and machine learning
Obviousobvious.aiObvious provides a fleet of always-on AI agents that collaborate with teams to build, review, and ship software.AI and machine learningDeveloper tools
Caribookscaribooks.comCaribooks connects QuickBooks to AI assistants like Claude, ChatGPT and Microsoft Copilot so users can ask about their numbers, prepare invoices and sort expenses in conversation.Finance and accounting software
Clinic OS Proclinicospro.comClinic OS Pro builds automated patient re-engagement campaigns for sports and ortho physical therapy clinics.Healthcare

The two technologies

Fathom

Productivity

Fathom is an AI notetaking tool that records and summarizes meetings, producing transcripts, summaries, and action items. It is used to keep teams aligned on meeting outcomes and follow-ups, and it syncs notes to tools such as Slack, Salesforce, HubSpot, Notion, and Asana.

Summarized from fathom.ai on 8 Nov 2026.

45% of the 55 companies we see using Fathom also show the other.

All 55 companies using Fathom39 name it as a subprocessorMore in Productivity

OpenAI

AI and LLM providers

OpenAI is a platform that provides an API for building with OpenAI models. It is used to access models, tools, and services for tasks such as text generation, image generation, audio, and agents.

Summarized from developers.openai.com on 8 Nov 2026.

1% of the 3,377 companies we see using OpenAI also show the other.

All 3,377 companies using OpenAI2,584 name it as a subprocessorMore in AI and LLM providers

Industries

Among the companies above, by our own classification of their homepage.

AI and machine learning7Sales5Developer tools3Cloud and infrastructure2Compliance and risk2Cybersecurity2Legal2

Other pairs

Companies with their own evidence for both.

More with Fathom

Cloudflare55companiesGoogle Workspace38companiesAmazon Web Services34companiesHubSpot34companiesStripe34companiesAnthropic29companies

More with OpenAI

Cloudflare3,356companiesGoogle Workspace2,525companiesAnthropic2,044companiesAmazon Web Services1,924companiesStripe1,697companiesGoogle1,589companies

Questions

How many companies use both Fathom and OpenAI?

25 companies in StrataDB's data have public evidence for both, and 19 of them name both in their own subprocessor list, the strongest evidence we hold. Our coverage is partial, so the real number is higher.

Which companies use Fathom and OpenAI?

AiSDR, Circle, CloseIntel, Critical Cloud and Dock, and 20 more companies. Each one links to the evidence behind it.

How does StrataDB know a company uses Fathom and OpenAI?

From four kinds of public evidence: subprocessor lists, privacy policies, website code and job postings. Each is kept apart with its source and the date we saw it. A company missing here means we found no evidence, not that it does not use them.

Find every company using Fathom and OpenAI

See the full list with the source for each company, and run the same lookup for any technology from the API, Claude or your browser.

  • Every company and vendor, with its public source
  • 100 API calls a month, plus MCP and the Chrome extension
  • Work email only. No card, no sales call