# What does 4Efficiency use?

4Efficiency (4ef.nl) shows public evidence of 14 tools, according to runsonwhat (last checked 2026-10-24).

- Industry: IT Services
- Size: 11–50 employees
- Based in: Deventer, Netherlands
- Founded: 2007
- LinkedIn: https://www.linkedin.com/company/4-efficiency-services-bv

## Application

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [jQuery](https://www.runsonwhat.com/reverse/jquery) | 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 |  |

## Go-to-market

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [WordPress](https://www.runsonwhat.com/reverse/wordpress) | Website & CMS | Website code |  |
| [Google Ads](https://www.runsonwhat.com/reverse/google-ads) | Ads & Pixels | Website code |  |
| [Yoast SEO](https://www.runsonwhat.com/reverse/yoast) | Website & CMS | Website code |  |
| [AdRoll](https://www.runsonwhat.com/reverse/adroll) | Ads & Pixels | Website code |  |
| [Leadinfo](https://www.runsonwhat.com/reverse/leadinfo) | Sales & CRM | Website code |  |

## Company Ops

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Microsoft 365](https://www.runsonwhat.com/reverse/microsoft-365) | Workspace | Email records |  |
| [SendGrid](https://www.runsonwhat.com/reverse/sendgrid) | Email Delivery | Email records |  |
| [Cookiebot](https://www.runsonwhat.com/reverse/cookiebot) | Security & Compliance | Website code |  |
| [Mailjet](https://www.runsonwhat.com/reverse/mailjet) | Email Delivery | Email records |  |
| [Flowmailer](https://www.runsonwhat.com/reverse/flowmailer) | Email Delivery | Email records |  |

## FAQ

### What tools does 4Efficiency use?

As of October 2026, runsonwhat has found 14 tools at 4Efficiency (4ef.nl) in public records. Application: jQuery. Data & Observability: Google Analytics and Google Tag Manager. Go-to-market: WordPress, Google Ads and Yoast SEO. Company Ops: Microsoft 365, SendGrid and Cookiebot. Last checked October 24, 2026.

### What sales tools does 4Efficiency use?

The sales tools runsonwhat has found at 4Efficiency are Leadinfo (October 2026); no CRM shows up in 4Efficiency's public records. runsonwhat found Leadinfo through Leadinfo code on 4ef.nl. Leadinfo is used by 5,955 companies runsonwhat tracks.

### What email provider does 4Efficiency use?

4Efficiency uses Microsoft 365 for email and office software, according to runsonwhat (October 2026). runsonwhat found Microsoft 365 through email records that authorize Microsoft 365. Microsoft 365 is used by 712,905 companies runsonwhat tracks.

### What analytics tools does 4Efficiency use?

4Efficiency uses Google Analytics for analytics, alongside Google Tag Manager, according to runsonwhat (October 2026). runsonwhat found Google Analytics through Google Analytics code on 4ef.nl. Google Analytics is used by 885,345 companies runsonwhat tracks.

### What is 4Efficiency's website built with?

4Efficiency uses WordPress for its website, alongside Yoast SEO, according to runsonwhat (October 2026). runsonwhat found WordPress through WordPress code on 4ef.nl. WordPress is used by 599,188 companies runsonwhat tracks.

### Does 4Efficiency use jQuery?

Yes. runsonwhat found jQuery at 4Efficiency through jQuery code on 4ef.nl. jQuery is a Frontend tool used by 918,694 companies runsonwhat tracks.

### Which companies have a tech stack similar to 4Efficiency's?

The companies with the stacks most like 4Efficiency's are SEVENP, Lesterius, Helder Telecom & Ict and Profmatch BV | Vaste Banen In Techniek | Noord-Holland, according to runsonwhat (October 2026). Each shares 7 to 8 tools with 4Efficiency, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices.

### How does runsonwhat know what 4Efficiency uses?

runsonwhat reads public records only. Of the 14 tools at 4Efficiency, 10 were found through code on 4ef.nl, 4 through email records. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and 4ef.nl about monthly.


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Source: runsonwhat, https://www.runsonwhat.com/company/4ef.nl (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.