linear.app vs cal.com: what they run on · Underhood

vs

16

only linear.app

8

in common

5

only cal.com

Open either side for the full report and evidence.

ServiceAlinear.appBcal.com

Hosting & CDN

Cloudflare● high● high

Framer—● medium

Google Cloud CDN● high—

DNS

Cloudflare DNS● high● high

Frontend framework

Next.js● medium—

Email (workspace)

Google Workspace● high● high

Email (sending)

HubSpot● high● high

Amazon SES● high—

Postmark● high—

SendGrid—● high

Payments

Stripe● high—

Analytics & product

Google Tag Manager—● medium

LaunchDarkly● high—

Collaboration & workspace SaaS

Microsoft 365 tenant● high● high

OpenAI● high● high

Anthropic● high—

Cloudflare dashboard SSO—● high

Cursor● high—

DocuSign● high—

Linear● high—

Notion● high—

Slack● high—

Zoom● high—

Other

Apple Business● high● high

Google Search Console● high● high

MongoDB Atlas● high—

MxToolbox—● high

Postmark DMARC● high—

Rippling● high—

● high● medium— not seenMedium and high confidence only. Hover a cell for its evidence.