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Technologies / HelloSign / OpenAI

Companies using HelloSign and OpenAI

4 companies in our data have public evidence for both HelloSign and OpenAI, and 4 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.

4companies use both
40%of HelloSign users
under 1%of OpenAI users
4name both as subprocessors

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

CompanyHelloSignOpenAI
BuildBetterbuildbetter.aiBuildBetter provides a platform that reads customer calls, tickets, and documents to link feedback to accounts and sources, and offers an agent called BoB.AI and machine learningCustomer support
Maaleximaalexi.aiMaalexi is an agricultural commodity exchange that verifies, stores, insures, tokenizes and trades physical commodities such as grains, pulses, spices and frozen meat.AgricultureLogistics and supply chain
Nexudusnexudus.comNexudus provides a coworking management platform for managing members, bookings and billing, with online booking and payment.Real estate
Woodpeckerwoodpecker.coWoodpecker.co is a cold email and LinkedIn outreach tool that combines prospecting, email campaigns, LinkedIn steps, follow-ups, and deliverability tools in one workflow.Sales

The two technologies

HelloSign

Productivity

HelloSign is now Dropbox Sign, an electronic signature product that lets you sign and send documents for signature online. It is used to create electronic signatures, sign PDFs, complete online contracts, and manage documents.

Summarized from dropboxsign.com on 8 Nov 2026.

40% of the 10 companies we see using HelloSign also show the other.

All 10 companies using HelloSign10 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.

under 1% of the 3,309 companies we see using OpenAI also show the other.

All 3,309 companies using OpenAI2,534 name it as a subprocessorMore in AI and LLM providers

Other pairs

Companies with their own evidence for both.

More with HelloSign

Cloudflare10companiesGoogle Workspace10companiesGoogle Tag Manager8companiesStripe7companiesZoom6companiesAmazon Web Services5companies

More with OpenAI

Cloudflare3,291companiesGoogle Workspace2,482companiesAnthropic2,000companiesAmazon Web Services1,892companiesStripe1,652companiesGoogle1,553companies

Questions

How many companies use both HelloSign and OpenAI?

4 companies in StrataDB's data have public evidence for both, and 4 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 HelloSign and OpenAI?

BuildBetter, Maalexi, Nexudus and Woodpecker. Each one links to the evidence behind it.

How does StrataDB know a company uses HelloSign 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 HelloSign 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