# What does Dr. Marcus use?

Dr. Marcus (dr-marcus.com) shows public evidence of 15 tools, according to runsonwhat (last checked 2026-10-19).

- Industry: Consumer Goods
- Size: 51–200 employees
- Based in: Kalisz, Poland
- Founded: 1998
- LinkedIn: https://www.linkedin.com/company/dr-marcus

## Application

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Google Fonts](https://www.runsonwhat.com/reverse/google-fonts) | Media & UI | Website code |  |
| [React](https://www.runsonwhat.com/reverse/react) | Frontend | Website code |  |
| [Tailwind CSS](https://www.runsonwhat.com/reverse/tailwind) | Frontend | Website code |  |
| [Next.js](https://www.runsonwhat.com/reverse/nextjs) | 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 |  |
| [Microsoft Clarity](https://www.runsonwhat.com/reverse/clarity) | Analytics | Website code |  |
| [Sentry](https://www.runsonwhat.com/reverse/sentry) | Monitoring | Website code |  |

## Go-to-market

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Google Ads](https://www.runsonwhat.com/reverse/google-ads) | Ads & Pixels | Website code |  |
| [MailerLite](https://www.runsonwhat.com/reverse/mailerlite) | Marketing | Email records |  |

## Company Ops

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Microsoft 365](https://www.runsonwhat.com/reverse/microsoft-365) | Workspace | Email records, Website code |  |
| [reCAPTCHA](https://www.runsonwhat.com/reverse/recaptcha) | Security & Compliance | Website code |  |
| [Exclaimer](https://www.runsonwhat.com/reverse/exclaimer) | Workspace | Email records |  |
| [Usercentrics](https://www.runsonwhat.com/reverse/usercentrics) | Security & Compliance | Website code |  |

## FAQ

### What tools does Dr. Marcus use?

As of October 2026, runsonwhat has found 15 tools at Dr. Marcus (dr-marcus.com) in public records. Application: Google Fonts, React and Tailwind CSS. Data & Observability: Google Analytics, Google Tag Manager and Microsoft Clarity. Go-to-market: Google Ads and MailerLite. Company Ops: Microsoft 365, reCAPTCHA and Exclaimer. Last checked October 19, 2026.

### What email provider does Dr. Marcus use?

Dr. Marcus uses Microsoft 365 for email and office software, alongside Exclaimer, according to runsonwhat (October 2026). runsonwhat found Microsoft 365 through email records that authorize Microsoft 365 and code on dr-marcus.com. Microsoft 365 is used by 712,515 companies runsonwhat tracks.

### What analytics tools does Dr. Marcus use?

Dr. Marcus uses Google Analytics for analytics, alongside Google Tag Manager and Microsoft Clarity, according to runsonwhat (October 2026). runsonwhat found Google Analytics through Google Analytics code on dr-marcus.com. Google Analytics is used by 883,213 companies runsonwhat tracks.

### What marketing software does Dr. Marcus use?

Dr. Marcus uses MailerLite for marketing, according to runsonwhat (October 2026). runsonwhat found MailerLite through email records that authorize MailerLite. MailerLite is used by 15,660 companies runsonwhat tracks.

### What monitoring tools does Dr. Marcus use?

Dr. Marcus uses Sentry for monitoring, according to runsonwhat (October 2026). runsonwhat found Sentry through Sentry code on dr-marcus.com. Sentry is used by 78,866 companies runsonwhat tracks.

### Does Dr. Marcus use Google Fonts?

Yes. runsonwhat found Google Fonts at Dr. Marcus through Google Fonts code on dr-marcus.com. Google Fonts is a Media & UI tool used by 811,889 companies runsonwhat tracks.

### How does runsonwhat know what Dr. Marcus uses?

runsonwhat reads public records only. Of the 15 tools at Dr. Marcus, 11 were found through code on dr-marcus.com, 3 through email records and 1 through DNS records. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and dr-marcus.com about monthly.


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Source: runsonwhat, https://www.runsonwhat.com/company/dr-marcus.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.