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Technologies / Prequel / Slack

Companies using Prequel and Slack

7 companies in our data have public evidence for both Prequel 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.

7companies use both
78%of Prequel users
under 1%of Slack users
7name both as subprocessors

Companies using one are 9.5 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

CompanyPrequelSlack
Confirmconfirm.comThe company provides workforce enablement software for learning, engagement, and performance management.
Verogetvero.comVero is a multi-channel customer engagement platform for sending email, SMS, and push messages.CommunicationsMarketing
Knockknock.appKnock provides agentic customer engagement software for sending lifecycle and transactional messages across email, in-app, push, SMS, and chat.Communications
Modern Treasurymoderntreasury.comModern Treasury provides an API for onboarding customers, opening accounts, and moving money across fiat and stablecoins with compliance and ledgering built in.Payments
Sequencesequencehq.comSequence provides CPQ, billing, accounts receivable and revenue recognition software for finance teams.Finance and accounting software
Orbwithorb.comOrb provides a revenue design platform that automates usage-based billing, supports pricing strategy, and connects usage data to revenue recognition and ERPs.Fintech
WorkRampworkramp.comLearn:Up (formerly WorkRamp) is an AI-driven learning management system that builds and delivers training, including onboarding paths, AI role-play simulations, skills tracking, and reporting.

The two technologies

Prequel is an API for data warehouse integrations that replicates live data from a platform to a customer's data warehouse and syncs data from a customer's data warehouse into a platform. It is used by product teams to deliver data transfers to their customers across many database, data warehouse, and object storage services.

Summarized from prequel.co on 8 Nov 2026.

78% of the 9 companies we see using Prequel also show the other.

All 9 companies using Prequel9 name it as a subprocessorMore in Data

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 1,949 companies we see using Slack also show the other.

All 1,949 companies using Slack1,355 name it as a subprocessorMore in Productivity

Other pairs

Companies with their own evidence for both.

More with Prequel

Cloudflare9companiesGoogle Workspace9companiesAmazon Web Services8companiesDatadog7companiesOpenAI7companiesAnthropic6companies

More with Slack

Cloudflare1,834companiesGoogle Workspace1,598companiesAmazon Web Services1,312companiesStripe906companiesGoogle Tag Manager887companiesGoogle821companies

Questions

How many companies use both Prequel and Slack?

7 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 Prequel and Slack?

Confirm, Vero, Knock, Modern Treasury and Sequence, and 2 more companies. Each one links to the evidence behind it.

How does StrataDB know a company uses Prequel 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 Prequel 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
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