# What does 21run use?

21run (21run.com) shows public evidence of 16 tools, according to runsonwhat (last checked 2026-10-23).

- Industry: Retail
- Size: 11–50 employees
- Based in: Mannheim, Germany
- LinkedIn: https://www.linkedin.com/company/21run

## Edge & Hosting

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Cloudflare](https://www.runsonwhat.com/reverse/cloudflare) | CDN & Edge | DNS records, Website code |  |

## Application

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Vimeo](https://www.runsonwhat.com/reverse/vimeo) | Media & UI | Website code |  |
| [Tailwind CSS](https://www.runsonwhat.com/reverse/tailwind) | Frontend | Website code |  |

## Data & Observability

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Google Analytics](https://www.runsonwhat.com/reverse/ga) | Analytics | Website code |  |
| [Google Tag Manager](https://www.runsonwhat.com/reverse/gtm) | Analytics | Website code |  |
| [Hotjar](https://www.runsonwhat.com/reverse/hotjar) | Analytics | Website code |  |

## Go-to-market

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Google Ads](https://www.runsonwhat.com/reverse/google-ads) | Ads & Pixels | Website code |  |
| [Meta Pixel](https://www.runsonwhat.com/reverse/meta-pixel) | Ads & Pixels | Website code |  |
| [Microsoft Ads](https://www.runsonwhat.com/reverse/bing-ads) | Ads & Pixels | Website code |  |
| [Pinterest](https://www.runsonwhat.com/reverse/pinterest) | Ads & Pixels | Website code |  |
| [Ahrefs](https://www.runsonwhat.com/reverse/ahrefs) | Marketing | DNS verification records |  |
| [Magento](https://www.runsonwhat.com/reverse/magento) | Website & CMS | Website code |  |
| [Trusted Shops](https://www.runsonwhat.com/reverse/trusted-shops) | Marketing | Website code |  |

## Company Ops

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [SendGrid](https://www.runsonwhat.com/reverse/sendgrid) | Email Delivery | Email records, Website code |  |
| [Mailgun](https://www.runsonwhat.com/reverse/mailgun) | Email Delivery | Custom domain, Email records, Website code |  |

## FAQ

### What tools does 21run use?

As of October 2026, runsonwhat has found 16 tools at 21run (21run.com) in public records. Edge & Hosting: Cloudflare. Application: Vimeo and Tailwind CSS. Data & Observability: Google Analytics, Google Tag Manager and Hotjar. Go-to-market: Google Ads, Meta Pixel and Microsoft Ads. Company Ops: SendGrid and Mailgun. Last checked October 23, 2026.

### What analytics tools does 21run use?

21run uses Google Analytics for analytics, alongside Google Tag Manager and Hotjar, according to runsonwhat (October 2026). runsonwhat found Google Analytics through Google Analytics code on 21run.com. Google Analytics is used by 895,313 companies runsonwhat tracks.

### What is 21run's website built with?

21run uses Magento for its website, according to runsonwhat (October 2026). runsonwhat found Magento through Magento code on 21run.com. Magento is used by 6,351 companies runsonwhat tracks.

### What marketing software does 21run use?

21run uses Ahrefs for marketing, alongside Trusted Shops, according to runsonwhat (October 2026). runsonwhat found Ahrefs through a DNS verification record for Ahrefs. Ahrefs is used by 23,876 companies runsonwhat tracks.

### Does 21run use Cloudflare?

Yes. runsonwhat found Cloudflare at 21run through DNS records that point at Cloudflare and code on 21run.com. Cloudflare is a CDN & Edge tool used by 712,212 companies runsonwhat tracks.

### Which companies have a tech stack similar to 21run's?

The companies with the stacks most like 21run's are Textil-Großhandel, Gastrohot Großküchentechnik, Baptist Arnhem and Buttinette Textil-Versandhaus, according to runsonwhat (October 2026). Each shares 6 to 8 tools with 21run, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices.

### How does runsonwhat know what 21run uses?

runsonwhat reads public records only. Of the 16 tools at 21run, 11 were found through code on 21run.com, 3 through DNS records, 1 through email records 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 21run.com about monthly.


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Source: runsonwhat, https://www.runsonwhat.com/company/21run.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.