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Technologies / Pydantic / Slack

Companies using Pydantic and Slack

9 companies in our data have public evidence for both Pydantic and Slack, and 7 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.

9companies use both
60%of Pydantic users
under 1%of Slack users
7name both as subprocessors

Companies using one are 7.3 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

CompanyPydanticSlack
Accountableaccountable.deFinance and accounting software
Demadema.aiDema connects a company's website data with stock, ads, orders, costs and returns in one commerce model.E-commerce
LightTablelighttable.aiLightTable uses AI to review construction documents for errors, omissions, and coordination issues before construction begins.Construction
Oneleetoneleet.comOneleet provides a cybersecurity and compliance platform that combines security tools such as penetration testing, code scanning, and device management with compliance support for frameworks including SOC 2, ISO 27001, GDPR, and HIPAA.Compliance and riskCybersecurity
Polarpolar.shPolar provides usage-based billing software that meters events, charges customers, and tracks unit economics.
Swantideswantide.comSwantide provides an agentic platform for building, maintaining, and optimizing Salesforce and other enterprise applications.AI and machine learning
swap-commerce.comSwap provides commerce services including shipping, cross-border duties and tax handling, returns, and AI shopping and customer support agents.E-commerce
FurtherAIfurtherai.comFurtherAI provides domain-specific AI that automates busywork in insurance workflows such as submissions, policies, audits, and claims.AI and machine learningInsurance
nemoxnemox.ainemox provides an AI assistant for freight forwarders that answers quote requests, sets up export and import shipments, and checks carrier invoices inside Outlook or Gmail, connected to a TMS.Logistics and supply chain

The two technologies

Pydantic Validation is data validation from Python type hints. It is used to parse, validate, and serialize data.

Summarized from pydantic.dev on 8 Nov 2026.

60% of the 15 companies we see using Pydantic also show the other.

All 15 companies using Pydantic15 name it as a subprocessor

Slack

by Salesforce · Productivity

Slack is a collaboration platform where teams chat, share files, and work together in channels. It is used for team communication, connecting apps and agents, and automating everyday work.

Summarized from slack.com on 8 Nov 2026.

under 1% of the 1,944 companies we see using Slack also show the other.

All 1,944 companies using Slack1,350 name it as a subprocessorMore in Productivity

Industries

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

E-commerce2AI and machine learning2

Other pairs

Companies with their own evidence for both.

More with Pydantic

Cloudflare15companiesGoogle Workspace13companiesAmazon Web Services12companiesOpenAI12companiesAnthropic11companiesNext.js9companies

More with Slack

Cloudflare1,821companiesGoogle Workspace1,585companiesAmazon Web Services1,305companiesStripe898companiesGoogle Tag Manager884companiesGoogle812companies

Questions

How many companies use both Pydantic and Slack?

9 companies in StrataDB's data have public evidence for both, and 7 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 Pydantic and Slack?

Accountable, Dema, LightTable, Oneleet and Polar, and 4 more companies. Each one links to the evidence behind it.

How does StrataDB know a company uses Pydantic and Slack?

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 Pydantic and Slack

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