# What does CalendarPipe use?

CalendarPipe (calendarpipe.com) shows public evidence of 9 tools, according to runsonwhat (last checked 2026-10-20).

- Based in: Prague, Czechia
- LinkedIn: https://www.linkedin.com/company/getcalendarpipe

## Edge & Hosting

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Cloudflare](https://www.runsonwhat.com/reverse/cloudflare) | CDN & Edge | Email records, DNS records, Website code |  |
| [Vercel](https://www.runsonwhat.com/reverse/vercel) | Hosting & Cloud | Custom domain, DNS verification records, DNS records, Website code |  |

## Application

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Next.js](https://www.runsonwhat.com/reverse/nextjs) | Frontend | Website code |  |

## Data & Observability

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [web-vitals](https://www.runsonwhat.com/reverse/web-vitals) | Monitoring | Website code |  |
| [PostHog](https://www.runsonwhat.com/reverse/posthog) | Analytics | Website code |  |

## Go-to-market

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Featurebase](https://www.runsonwhat.com/reverse/featurebase) | Support & Docs | Website code |  |

## Company Ops

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Amazon SES](https://www.runsonwhat.com/reverse/ses) | Email Delivery | Email records |  |

## FAQ

### What tools does CalendarPipe use?

As of October 2026, runsonwhat has found 9 tools at CalendarPipe (calendarpipe.com) in public records. Edge & Hosting: Cloudflare and Vercel. Application: Next.js. Data & Observability: web-vitals and PostHog. Go-to-market: Featurebase. Company Ops: Amazon SES. Last checked October 20, 2026.

### What cloud does CalendarPipe run on?

CalendarPipe uses Vercel for hosting and cloud infrastructure, according to runsonwhat (October 2026). runsonwhat found Vercel through a subdomain that points at Vercel and a DNS verification record. Vercel is used by 47,837 companies runsonwhat tracks.

### What does CalendarPipe use for customer support?

CalendarPipe uses Featurebase for customer support and documentation, according to runsonwhat (October 2026). runsonwhat found Featurebase through Featurebase code on calendarpipe.com. Featurebase is used by 151 companies runsonwhat tracks.

### What analytics tools does CalendarPipe use?

CalendarPipe uses PostHog for analytics, according to runsonwhat (October 2026). runsonwhat found PostHog through PostHog code on calendarpipe.com. PostHog is used by 9,810 companies runsonwhat tracks.

### What monitoring tools does CalendarPipe use?

CalendarPipe uses web-vitals for monitoring, according to runsonwhat (October 2026). runsonwhat found web-vitals through web-vitals code on calendarpipe.com. web-vitals is used by 27,591 companies runsonwhat tracks.

### Does CalendarPipe use Cloudflare?

Yes. runsonwhat found Cloudflare at CalendarPipe through email records that authorize Cloudflare and DNS records. Cloudflare is a CDN & Edge tool used by 700,616 companies runsonwhat tracks.

### Which companies have a tech stack similar to CalendarPipe's?

The companies with the stacks most like CalendarPipe's are Flowglad, Typa, savysoda and Swif.ai, according to runsonwhat (October 2026). Each shares 2 to 6 tools with CalendarPipe, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices.

### How does runsonwhat know what CalendarPipe uses?

runsonwhat reads public records only. Of the 9 tools at CalendarPipe, 4 were found through code on calendarpipe.com, 2 through email records, 1 through DNS records, 1 through website configuration files and 1 through subdomains that point at the vendor. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and calendarpipe.com about monthly.


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Source: runsonwhat, https://www.runsonwhat.com/company/calendarpipe.com (updated October 2026). Counts are companies with direct public evidence of the tool (DNS records, certificates, website code, a real-browser crawl, subprocessor lists), so they are lower bounds. Methodology: https://www.runsonwhat.com/methodology.