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Technologies / Slack / TaxJar

Companies using Slack and TaxJar

5 companies in our data have public evidence for both Slack and TaxJar, and 5 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.

5companies use both
under 1%of Slack users
50%of TaxJar users
5name both as subprocessors

Companies using one are 6.1 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

CompanySlackTaxJar
Arternalarternal.comARTERNAL provides gallery management software for tracking collector relationships, inventory, viewing rooms, invoicing, and websites.Sales
Measuregetmeasure.comMeasure provides billing and revenue operations software that connects contracts, usage metering, billing, revenue recognition, commissions, and reporting in one system.Finance and accounting software
Mailchimpmailchimp.comMailchimp provides email and SMS marketing tools, including AI-powered marketing tools and automations.Marketing
webflow.comWebflow provides tools to build, manage, and grow a website.Design and creative
WorkWaveworkwave.comWorkWave provides field service management software, including products like PestPac, RealGreen, and WinTeam, along with fintech tools and business analytics.Data and analytics

The two technologies

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 1,936 companies we see using Slack also show the other.

All 1,936 companies using Slack1,343 name it as a subprocessorMore in Productivity

TaxJar

Finance and ERP

TaxJar is a sales tax compliance platform. It is used to automate the sales tax lifecycle, from calculations to filing, across sales channels.

Summarized from taxjar.com on 8 Nov 2026.

50% of the 10 companies we see using TaxJar also show the other.

All 10 companies using TaxJar9 name it as a subprocessorMore in Finance and ERP

Other pairs

Companies with their own evidence for both.

More with Slack

Cloudflare1,813companiesGoogle Workspace1,580companiesAmazon Web Services1,298companiesStripe896companiesGoogle Tag Manager880companiesGoogle810companies

More with TaxJar

Cloudflare10companiesAmazon Web Services9companiesAnthropic7companiesGoogle7companiesGoogle Workspace7companiesStripe7companies

Questions

How many companies use both Slack and TaxJar?

5 companies in StrataDB's data have public evidence for both, and 5 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 Slack and TaxJar?

Arternal, Measure, Mailchimp, webflow.com and WorkWave. Each one links to the evidence behind it.

How does StrataDB know a company uses Slack and TaxJar?

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 Slack and TaxJar

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
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