# What does GSO use?

GSO (groupesudouest.com) shows public evidence of 13 tools, according to runsonwhat (last checked 2026-11-10).

- Based in: France
- Founded: 1997
- LinkedIn: https://www.linkedin.com/company/groupesudouest

## Edge & Hosting

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Cloudflare](https://www.runsonwhat.com/reverse/cloudflare) | CDN & Edge | Website code |  |
| [Infomaniak](https://www.runsonwhat.com/reverse/infomaniak) | Hosting & Cloud | Website code |  |
| [Render](https://www.runsonwhat.com/reverse/render) | Hosting & Cloud | Website code |  |

## Application

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

## Go-to-market

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Piano](https://www.runsonwhat.com/reverse/piano) | Marketing | Website code |  |

## Company Ops

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Google Workspace](https://www.runsonwhat.com/reverse/google-workspace) | Workspace | Email records, Website code |  |
| [Cloudflare Turnstile](https://www.runsonwhat.com/reverse/turnstile) | Security & Compliance | Website code |  |
| [Mailjet](https://www.runsonwhat.com/reverse/mailjet) | Email Delivery | Email records, Website code |  |
| [Imperva](https://www.runsonwhat.com/reverse/imperva) | Security & Compliance | Custom domain, Website code |  |

## Recent changes at GSO

- 2026-11-02: started using [Piano](https://www.runsonwhat.com/reverse/piano)

## FAQ

### What tools does GSO use?

As of November 2026, runsonwhat has found 13 tools at GSO (groupesudouest.com) in public records. Edge & Hosting: Cloudflare, Infomaniak and Render. Application: YouTube, React and Tailwind CSS. Go-to-market: Piano. Company Ops: Google Workspace, Cloudflare Turnstile and Mailjet. Last checked November 10, 2026.

### What cloud does GSO run on?

GSO uses Infomaniak for hosting and cloud infrastructure, alongside Render, according to runsonwhat (November 2026). runsonwhat found Infomaniak through Infomaniak code on groupesudouest.com. Infomaniak is used by 3,452 companies runsonwhat tracks.

### What email provider does GSO use?

GSO 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 groupesudouest.com. Google Workspace is used by 423,463 companies runsonwhat tracks.

### What marketing software does GSO use?

GSO uses Piano for marketing, according to runsonwhat (November 2026). runsonwhat found Piano through Piano code on groupesudouest.com. Piano is used by 2,128 companies runsonwhat tracks.

### Does GSO use Cloudflare?

Yes. runsonwhat found Cloudflare at GSO through Cloudflare code on groupesudouest.com. Cloudflare is a CDN & Edge tool used by 737,816 companies runsonwhat tracks.

### Has GSO changed tools recently?

Yes. On runsonwhat's rechecks, GSO started using Piano (latest on November 2, 2026). A change counts only between two checks of groupesudouest.com done the same way.

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

The companies with the stacks most like GSO's are Mediapart, L'Express, lindependant.fr and https://www.fox10tv.com, according to runsonwhat (November 2026). Each shares 3 to 5 tools with GSO, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices.

### How does runsonwhat know what GSO uses?

runsonwhat reads public records only. Of the 13 tools at GSO, 9 were found through code on groupesudouest.com, 2 through email records, 1 through DNS records and 1 through subdomains that point at the vendor. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and groupesudouest.com about monthly.


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Source: runsonwhat, https://www.runsonwhat.com/company/groupesudouest.com (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.