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Technologies / Calendly / User.com

Companies using Calendly and User.com

2 companies in our data have public evidence for both Calendly and User.com, and 2 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.

2companies use both
under 1%of Calendly users
67%of User.com users
2name 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

CompanyCalendlyUser.com
Reditusgetreditus.comReditus provides affiliate and referral program software for B2B SaaS companies.
UptimeRobotuptimerobot.comUptimeRobot is an uptime monitoring service that checks websites, APIs, and other endpoints and alerts users when something goes down.Cloud and infrastructure

The two technologies

Calendly

Productivity

Calendly is a scheduling tool that lets people book meetings, with control over calendar availability, meeting templates, and automated email and text reminders. It is used to find meeting times, reduce no-shows, and let visitors schedule directly from a website.

Summarized from calendly.com on 8 Nov 2026.

under 1% of the 541 companies we see using Calendly also show the other.

All 541 companies using Calendly167 name it as a subprocessorMore in Productivity

67% of the 3 companies we see using User.com also show the other.

All 3 companies using User.com

Other pairs

Companies with their own evidence for both.

More with Calendly

Cloudflare541companiesGoogle Workspace382companiesGoogle Tag Manager274companiesAmazon Web Services237companiesGoogle Analytics235companiesGoogle204companies

Questions

How many companies use both Calendly and User.com?

2 companies in StrataDB's data have public evidence for both, and 2 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 Calendly and User.com?

Reditus and UptimeRobot. Each one links to the evidence behind it.

How does StrataDB know a company uses Calendly and User.com?

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 Calendly and User.com

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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