# What does Sommerfuglen use?

Sommerfuglen (sommerfuglen.dk) shows public evidence of 15 tools, according to runsonwhat (last checked 2026-11-09).

- Based in: Denmark

## Application

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [jQuery](https://www.runsonwhat.com/reverse/jquery) | Frontend | Website code |  |
| [Google Fonts](https://www.runsonwhat.com/reverse/google-fonts) | Media & UI | Website code |  |
| [React](https://www.runsonwhat.com/reverse/react) | Frontend | Website code |  |
| [Clerk](https://www.runsonwhat.com/reverse/clerk) | Auth & Identity | 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 |  |

## 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 |  |
| [Mailchimp](https://www.runsonwhat.com/reverse/mailchimp) | Marketing | Website code |  |
| [Klaviyo](https://www.runsonwhat.com/reverse/klaviyo) | Marketing | DNS verification records, Website code |  |
| [Clerk.io](https://www.runsonwhat.com/reverse/clerk-io) | Marketing | Website code |  |

## Company Ops

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Microsoft 365](https://www.runsonwhat.com/reverse/microsoft-365) | Workspace | Email records, Website code |  |
| [Mailchimp Transactional](https://www.runsonwhat.com/reverse/mandrill) | Email Delivery | Email records |  |
| [Mailgun](https://www.runsonwhat.com/reverse/mailgun) | Email Delivery | Email records, Website code |  |

## FAQ

### What tools does Sommerfuglen use?

As of November 2026, runsonwhat has found 15 tools at Sommerfuglen (sommerfuglen.dk) in public records. Application: jQuery, Google Fonts and React. Data & Observability: Google Analytics and Google Tag Manager. Go-to-market: Google Ads, Meta Pixel and Mailchimp. Company Ops: Microsoft 365, Mailchimp Transactional and Mailgun. Last checked November 9, 2026.

### What email provider does Sommerfuglen use?

Sommerfuglen uses Microsoft 365 for email and office software, according to runsonwhat (November 2026). runsonwhat found Microsoft 365 through email records that authorize Microsoft 365 and code on sommerfuglen.dk. Microsoft 365 is used by 736,706 companies runsonwhat tracks.

### What analytics tools does Sommerfuglen use?

Sommerfuglen uses Google Analytics for analytics, alongside Google Tag Manager, according to runsonwhat (November 2026). runsonwhat found Google Analytics through Google Analytics code on sommerfuglen.dk. Google Analytics is used by 904,122 companies runsonwhat tracks.

### What marketing software does Sommerfuglen use?

Sommerfuglen uses Mailchimp for marketing, alongside Klaviyo and Clerk.io, according to runsonwhat (November 2026). runsonwhat found Mailchimp through Mailchimp code on sommerfuglen.dk. Mailchimp is used by 119,258 companies runsonwhat tracks.

### What does Sommerfuglen use for login and identity?

Sommerfuglen uses Clerk for sign-in and identity, according to runsonwhat (November 2026). runsonwhat found Clerk through Clerk code on sommerfuglen.dk. Clerk is used by 1,462 companies runsonwhat tracks.

### Does Sommerfuglen use jQuery?

Yes. runsonwhat found jQuery at Sommerfuglen through jQuery code on sommerfuglen.dk. jQuery is a Frontend tool used by 927,282 companies runsonwhat tracks.

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

The companies with the stacks most like Sommerfuglen's are IndaCloud, Austria Sport, Seeland and Phoneclick, according to runsonwhat (November 2026). Each shares 9 to 11 tools with Sommerfuglen, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices.

### How does runsonwhat know what Sommerfuglen uses?

runsonwhat reads public records only. Of the 15 tools at Sommerfuglen, 10 were found through code on sommerfuglen.dk, 3 through email records and 2 through DNS records. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and sommerfuglen.dk about monthly.


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Source: runsonwhat, https://www.runsonwhat.com/company/sommerfuglen.dk (updated November 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.