runsonwhat

Calendly's tech stack

What does Calendly use?

Calendly (calendly.com) uses at least 55 tools we can see from public records, including Vercel for hosting, Microsoft 365 for email and documents, HubSpot for sales and Zendesk for customer support. Last checked .

Re-check liveVisit calendly.com
Tools found
55
Categories
18
Layers
5 of 5
Last checked
Oct 2026

Calendly's stack, layer by layer

Each tool links to the other companies we've found using it. The label says what kind of public trace gave it away.

Edge & Hosting

3 tools, where the bytes are served from

Hosting & Cloud

CDN & Edge

Application

5 tools, what the product is built with

Frontend

Auth & Identity

AI

Payments & Billing

Data & Observability

3 tools, what they measure and store

Analytics

Go-to-market

13 tools, how they find and keep customers

Website & CMS

Marketing

Ads & Pixels

Sales & CRM

Support & Docs

Company Ops

31 tools, what the team runs on day to day

Email Delivery

Workspace

Collaboration

Dev Tools

Finance & Legal

Security & Compliance

Companies like Calendly also use

Tools common among companies with a similar stack that we haven't found at Calendly.

Companies with a stack like Calendly's

Ranked by shared tools, with rare tools counting more.

Calendly tech stack FAQ

What tools does Calendly use?

We've found 55 tools at Calendly (calendly.com). Edge & Hosting: Cloudflare, Amazon CloudFront and Vercel. Application: OpenAI, Stripe and Astro. Data & Observability: Google Analytics, Google Tag Manager and Pendo. Go-to-market: Meta Pixel, Google Ads and HubSpot. Company Ops: Microsoft 365, Google Workspace and SendGrid. Last checked October 1, 2026.

What cloud does Calendly run on?

Calendly uses Vercel for hosting. We found Vercel through DNS verification records.

What CRM does Calendly use?

Calendly uses HubSpot and Gainsight for sales and CRM. We found HubSpot through email records.

What email provider does Calendly use?

Calendly uses Microsoft 365, Google Workspace and Apple Business for email and documents. We found Microsoft 365 through DNS verification records.

What does Calendly use for customer support?

Calendly uses Zendesk and Intercom for customer support. We found Zendesk through email records.

What payment provider does Calendly use?

Calendly uses Stripe for payments. We found Stripe through DNS verification records.

Does Calendly use Microsoft 365?

Yes. We found Microsoft 365 at Calendly through DNS verification records. Microsoft 365 is used by 245,233 companies we track.

How does runsonwhat know what Calendly uses?

We read public traces only: Calendly's DNS and email records, certificate logs, the code its website loads, and published subprocessor lists. A tool is listed only when a direct record backs it up. DNS is rechecked weekly and the website monthly.

We read public traces only: DNS and email records, certificate logs, website code and published subprocessor lists. A tool is listed when a direct record backs it up, and dropped when a recheck no longer finds it. Is this your company? See how to opt out.