# What does Leef! use?

Leef! (leef.nu) shows public evidence of 11 tools, according to runsonwhat (last checked 2026-11-01).

- Industry: Healthcare
- Size: 11–50 employees
- Based in: Netherlands
- Founded: 1989
- LinkedIn: https://www.linkedin.com/company/leef.nu

## 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 |  |
| [Font Awesome](https://www.runsonwhat.com/reverse/fontawesome) | Media & UI | Website code |  |
| [Vimeo](https://www.runsonwhat.com/reverse/vimeo) | Media & UI | Website code |  |
| [YouTube](https://www.runsonwhat.com/reverse/youtube) | Media & UI | Website code |  |

## Data & Observability

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Google Analytics](https://www.runsonwhat.com/reverse/ga) | Analytics | Website code |  |
| [Microsoft Clarity](https://www.runsonwhat.com/reverse/clarity) | Analytics | Website code |  |

## Go-to-market

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [WordPress](https://www.runsonwhat.com/reverse/wordpress) | Website & CMS | Website code |  |
| [Meta Pixel](https://www.runsonwhat.com/reverse/meta-pixel) | Ads & Pixels | Website code |  |
| [Yoast SEO](https://www.runsonwhat.com/reverse/yoast) | Website & CMS | Website code |  |

## Company Ops

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Microsoft 365](https://www.runsonwhat.com/reverse/microsoft-365) | Workspace | DNS verification records, Email records |  |

## FAQ

### What tools does Leef! use?

As of November 2026, runsonwhat has found 11 tools at Leef! (leef.nu) in public records. Application: jQuery, Google Fonts and Font Awesome. Data & Observability: Google Analytics and Microsoft Clarity. Go-to-market: WordPress, Meta Pixel and Yoast SEO. Company Ops: Microsoft 365. Last checked November 1, 2026.

### What email provider does Leef! use?

Leef! uses Microsoft 365 for email and office software, according to runsonwhat (November 2026). runsonwhat found Microsoft 365 through a DNS verification record for Microsoft 365 and email records. Microsoft 365 is used by 720,940 companies runsonwhat tracks.

### What analytics tools does Leef! use?

Leef! uses Google Analytics for analytics, alongside Microsoft Clarity, according to runsonwhat (November 2026). runsonwhat found Google Analytics through Google Analytics code on leef.nu. Google Analytics is used by 905,976 companies runsonwhat tracks.

### What is Leef!'s website built with?

Leef! uses WordPress for its website, alongside Yoast SEO, according to runsonwhat (November 2026). runsonwhat found WordPress through WordPress code on leef.nu. WordPress is used by 607,134 companies runsonwhat tracks.

### Does Leef! use jQuery?

Yes. runsonwhat found jQuery at Leef! through jQuery code on leef.nu. jQuery is a Frontend tool used by 929,928 companies runsonwhat tracks.

### How does runsonwhat know what Leef! uses?

runsonwhat reads public records only. Of the 11 tools at Leef!, 10 were found through code on leef.nu, 1 through DNS records. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and leef.nu about monthly.


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Source: runsonwhat, https://www.runsonwhat.com/company/leef.nu (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.