# What does Cerf Vert use?

Cerf Vert (cerfvert.org) shows public evidence of 15 tools, according to runsonwhat (last checked 2026-11-11).

- Industry: Environmental Services
- Size: 201–1,000 employees
- Based in: Lyon, France
- Founded: 2020
- LinkedIn: https://www.linkedin.com/company/cerf-vert

## Edge & Hosting

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

## Application

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [GSAP](https://www.runsonwhat.com/reverse/gsap) | Media & UI | Website code |  |
| [React](https://www.runsonwhat.com/reverse/react) | Frontend | Website code |  |
| [Firebase](https://www.runsonwhat.com/reverse/firebase) | Backend & Database | Custom domain |  |

## Data & Observability

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Google Analytics](https://www.runsonwhat.com/reverse/ga) | Analytics | Website code |  |
| [Sentry](https://www.runsonwhat.com/reverse/sentry) | Monitoring | Website code |  |

## Go-to-market

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Wix](https://www.runsonwhat.com/reverse/wix) | Website & CMS | Custom domain, Email records, DNS records, Website code |  |
| [ChatGPT Ads](https://www.runsonwhat.com/reverse/chatgpt-ads) | Ads & Pixels | Website code |  |
| [MailerLite](https://www.runsonwhat.com/reverse/mailerlite) | Marketing | DNS verification records, Email records |  |

## Company Ops

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Google Workspace](https://www.runsonwhat.com/reverse/google-workspace) | Workspace | Email records, Website code |  |
| [Resend](https://www.runsonwhat.com/reverse/resend) | Email Delivery | Email records |  |

## FAQ

### What tools does Cerf Vert use?

As of November 2026, runsonwhat has found 15 tools at Cerf Vert (cerfvert.org) in public records. Edge & Hosting: Cloudflare and Fastly. Application: GSAP, React and Firebase. Data & Observability: Google Analytics and Sentry. Go-to-market: Wix, ChatGPT Ads and MailerLite. Company Ops: Google Workspace and Resend. Last checked November 11, 2026.

### What email provider does Cerf Vert use?

Cerf Vert uses Google Workspace for email and office software, according to runsonwhat (November 2026). runsonwhat found Google Workspace through email records that authorize Google Workspace and code on cerfvert.org. Google Workspace is used by 420,197 companies runsonwhat tracks.

### What analytics tools does Cerf Vert use?

Cerf Vert uses Google Analytics for analytics, according to runsonwhat (November 2026). runsonwhat found Google Analytics through Google Analytics code on cerfvert.org. Google Analytics is used by 903,974 companies runsonwhat tracks.

### What is Cerf Vert's website built with?

Cerf Vert uses Wix for its website, according to runsonwhat (November 2026). runsonwhat found Wix through a subdomain that points at Wix and email records. Wix is used by 52,469 companies runsonwhat tracks.

### What marketing software does Cerf Vert use?

Cerf Vert uses MailerLite for marketing, according to runsonwhat (November 2026). runsonwhat found MailerLite through a DNS verification record for MailerLite and email records. MailerLite is used by 16,329 companies runsonwhat tracks.

### What monitoring tools does Cerf Vert use?

Cerf Vert uses Sentry for monitoring, according to runsonwhat (November 2026). runsonwhat found Sentry through Sentry code on cerfvert.org. Sentry is used by 80,111 companies runsonwhat tracks.

### Does Cerf Vert use Cloudflare?

Yes. runsonwhat found Cloudflare at Cerf Vert through Cloudflare code on cerfvert.org. Cloudflare is a CDN & Edge tool used by 733,761 companies runsonwhat tracks.

### How does runsonwhat know what Cerf Vert uses?

runsonwhat reads public records only. Of the 15 tools at Cerf Vert, 8 were found through code on cerfvert.org, 2 through DNS records, 2 through email records, 2 through subdomains that point at the vendor and 1 through website configuration files. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and cerfvert.org about monthly.


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Source: runsonwhat, https://www.runsonwhat.com/company/cerfvert.org (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.