C3S's tech stack
What does C3S use?
C3S (c3s.fr) uses at least 24 tools we can see from public records, including Stripe for payments, WooCommerce for its website, Brevo for marketing and Mailchimp Transactional for email delivery. Last checked .
- Industry
- Professional Training & Coaching
- Size
- 11–50 employees
- Based in
- Le Mans, France
- Founded
- 2004
- Company page
- Tools found
- 24
- Categories
- 11
- Layers
- 5 of 5
- Last checked
- Nov 2026
C3S's stack, layer by layer
Of 24 tools, 17 came from website code, 3 from DNS verification records, 3 from email records and 1 from other records. Each tool links to the other companies we've found using it. The label says what kind of public trace gave it away.
Edge & Hosting
2 tools, where the bytes are served from
CDN & Edge
DNS
Application
7 tools, what the product is built with
Frontend
Payments & Billing
Data & Observability
2 tools, what they measure and store
Go-to-market
9 tools, how they find and keep customers
Company Ops
4 tools, what the team runs on day to day
Email Delivery
C3S tech stack FAQ
What tools does C3S use?
As of November 2026, runsonwhat has found 24 tools at C3S (c3s.fr) in public records. Edge & Hosting: Cloudflare and Gandi. Application: jQuery, Google Fonts and Font Awesome. Data & Observability: Google Analytics and Google Tag Manager. Go-to-market: WordPress, Google Ads and Yoast SEO. Company Ops: Microsoft 365, Google Workspace and Mailchimp Transactional. Last checked November 8, 2026.
What email provider does C3S use?
C3S uses Microsoft 365 for email and office software, alongside Google Workspace, according to runsonwhat (November 2026). runsonwhat found Microsoft 365 through a DNS verification record for Microsoft 365. Microsoft 365 is used by 732,077 companies runsonwhat tracks.
What payment provider does C3S use?
C3S uses Stripe for payments and billing, according to runsonwhat (November 2026). runsonwhat found Stripe through Stripe code on c3s.fr. Stripe is used by 31,363 companies runsonwhat tracks.
What analytics tools does C3S use?
C3S uses Google Analytics for analytics, alongside Google Tag Manager, according to runsonwhat (November 2026). runsonwhat found Google Analytics through Google Analytics code on c3s.fr. Google Analytics is used by 903,839 companies runsonwhat tracks.
What is C3S's website built with?
C3S uses WordPress for its website, alongside Yoast SEO, Elementor and WooCommerce, according to runsonwhat (November 2026). runsonwhat found WordPress through WordPress code on c3s.fr. WordPress is used by 606,704 companies runsonwhat tracks.
What marketing software does C3S use?
C3S uses Mailchimp for marketing, alongside Brevo, according to runsonwhat (November 2026). runsonwhat found Mailchimp through Mailchimp code on c3s.fr. Mailchimp is used by 118,796 companies runsonwhat tracks.
Does C3S use jQuery?
Yes. runsonwhat found jQuery at C3S through jQuery code on c3s.fr. jQuery is a Frontend tool used by 927,184 companies runsonwhat tracks.
How does runsonwhat know what C3S uses?
runsonwhat reads public records only. Of the 24 tools at C3S, 17 were found through code on c3s.fr, 4 through DNS records and 3 through email records. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and c3s.fr about monthly.
We read public traces only: DNS and email records, certificate logs, website code and published subprocessor lists. A tool is listed when a direct record backs it up, and dropped when a recheck no longer finds it. Is this your company? See how to opt out.