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Technologies / Postman / Slack

Companies using Postman and Slack

8 companies in our data have public evidence for both Postman 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.

8companies use both
53%of Postman users
under 1%of Slack users
7name both as subprocessors

Companies using one are 6.5 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

CompanyPostmanSlack
Addresscloudaddresscloud.comAddresscloud turns addresses into location, property, peril and accumulation data for insurance decisions.Insurance
Marketfuelmarketfuel.comMarketfuel provides software for building and running online stores, including punchout connections, fulfillment automation, and reporting.E-commerce
Significosignifico.comSignifico builds custom health software products, apps, and tools, and also partners with benefits providers, insurance, and health companies to create custom solutions.Healthcare
Swantideswantide.comSwantide provides an agentic platform for building, maintaining, and optimizing Salesforce and other enterprise applications.AI and machine learning
Multiplierusemultiplier.comMultiplier provides an employer of record, contractor of record, global payroll, and immigration support for hiring and paying teams across countries.HR and recruiting
Verseverse.incVerse provides faster grid interconnection and a platform to control and dispatch energy assets.Energy and climate
Videowisevideowise.comVideowise provides a video commerce platform for adding shoppable videos, live shopping, and user-generated content to online stores.E-commerce
Maestro AIgetmaestro.aiMaestro provides token accounting and visibility for coding agent sessions, showing where tokens go and what they produced.AI and machine learningDeveloper tools

The two technologies

Postman

Developer tools

Postman is a platform for designing, building, testing, and managing APIs, including a Postman CLI and MCP Server that give AI coding agents access to API workflows. It is used by developers and teams to run collections and tests, mock APIs, monitor endpoints, and map API dependencies.

Summarized from postman.com on 8 Nov 2026.

53% of the 15 companies we see using Postman also show the other.

All 15 companies using Postman15 name it as a subprocessorMore in Developer tools

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 Postman

Cloudflare15companiesGoogle Workspace13companiesAmazon Web Services10companiesGitHub10companiesGoogle Tag Manager9companiesGoogle Analytics8companies

More with Slack

Cloudflare1,823companiesGoogle Workspace1,587companiesAmazon Web Services1,307companiesStripe899companiesGoogle Tag Manager884companiesGoogle813companies

Questions

How many companies use both Postman and Slack?

8 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 Postman and Slack?

Addresscloud, Marketfuel, Significo, Swantide and Multiplier, and 3 more companies. Each one links to the evidence behind it.

How does StrataDB know a company uses Postman 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 Postman 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