# What does OpenClassrooms use? OpenClassrooms (openclassrooms.com) shows public evidence of 42 tools, according to runsonwhat (last checked 2026-10-20). - LinkedIn: https://www.linkedin.com/company/openclassrooms ## Edge & Hosting | Tool | Category | Evidence | Since | |---|---|---|---| | [Cloudflare](https://www.runsonwhat.com/reverse/cloudflare) | CDN & Edge | DNS records, Website code | | | [Fastly](https://www.runsonwhat.com/reverse/fastly) | CDN & Edge | Custom domain | 2019-03 | ## Application | Tool | Category | Evidence | Since | |---|---|---|---| | [jQuery](https://www.runsonwhat.com/reverse/jquery) | Frontend | Website code | | | [Vimeo](https://www.runsonwhat.com/reverse/vimeo) | Media & UI | Website code | | | [React](https://www.runsonwhat.com/reverse/react) | Frontend | Website code | | | [Anthropic](https://www.runsonwhat.com/reverse/anthropic) | AI | DNS verification records | | | [OpenAI](https://www.runsonwhat.com/reverse/openai) | AI | DNS verification records | | | [imgix](https://www.runsonwhat.com/reverse/imgix) | Media & UI | 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 | | | [Microsoft Clarity](https://www.runsonwhat.com/reverse/clarity) | Analytics | Website code | | | [Datadog](https://www.runsonwhat.com/reverse/datadog) | Monitoring | Website code | | | [Dynatrace](https://www.runsonwhat.com/reverse/dynatrace) | Monitoring | DNS verification records | | ## Go-to-market | Tool | Category | Evidence | Since | |---|---|---|---| | [Google Ads](https://www.runsonwhat.com/reverse/google-ads) | Ads & Pixels | Website code | | | [Meta Pixel](https://www.runsonwhat.com/reverse/meta-pixel) | Ads & Pixels | DNS verification records, Website code | | | [LinkedIn Insight Tag](https://www.runsonwhat.com/reverse/linkedin-insight) | Ads & Pixels | Website code | | | [Microsoft Ads](https://www.runsonwhat.com/reverse/bing-ads) | Ads & Pixels | Website code | | | [Mailchimp](https://www.runsonwhat.com/reverse/mailchimp) | Marketing | Email records | | | [HubSpot](https://www.runsonwhat.com/reverse/hubspot) | Sales & CRM | Email records, DNS verification records, Website code | | | [Brevo](https://www.runsonwhat.com/reverse/brevo) | Marketing | DNS verification records, Website code | | | [TikTok Pixel](https://www.runsonwhat.com/reverse/tiktok-pixel) | Ads & Pixels | Website code | | | [Zendesk](https://www.runsonwhat.com/reverse/zendesk) | Support & Docs | Email records, Website code | | | [Salesforce](https://www.runsonwhat.com/reverse/salesforce) | Sales & CRM | Email records, Website code | | | [Squarespace](https://www.runsonwhat.com/reverse/squarespace) | Website & CMS | Custom domain | 2025-04 | | [FormAssembly](https://www.runsonwhat.com/reverse/formassembly) | Marketing | Website code | | | [Circle](https://www.runsonwhat.com/reverse/circle) | Support & Docs | Custom domain | 2025-11 | | [Blueshift](https://www.runsonwhat.com/reverse/blueshift) | Marketing | Custom domain, Website code | | ## Company Ops | Tool | Category | Evidence | Since | |---|---|---|---| | [Microsoft 365](https://www.runsonwhat.com/reverse/microsoft-365) | Workspace | DNS verification records | | | [Google Workspace](https://www.runsonwhat.com/reverse/google-workspace) | Workspace | Email records | | | [Apple Business](https://www.runsonwhat.com/reverse/apple) | Workspace | DNS verification records | | | [Atlassian](https://www.runsonwhat.com/reverse/atlassian) | Dev Tools | DNS verification records | | | [Mailgun](https://www.runsonwhat.com/reverse/mailgun) | Email Delivery | Custom domain, Email records, Website code | 2022-06 | | [Miro](https://www.runsonwhat.com/reverse/miro) | Collaboration | DNS verification records | | | [Jamf](https://www.runsonwhat.com/reverse/jamf) | Security & Compliance | DNS verification records | | | [Figma](https://www.runsonwhat.com/reverse/figma) | Collaboration | DNS verification records | | | [TeamViewer](https://www.runsonwhat.com/reverse/teamviewer) | Dev Tools | DNS verification records | | | [Dropbox](https://www.runsonwhat.com/reverse/dropbox) | Collaboration | DNS verification records, Website code | | | [Teamtailor](https://www.runsonwhat.com/reverse/teamtailor) | People & HR | Custom domain | 2018-10 | | [TrustArc](https://www.runsonwhat.com/reverse/trustarc) | Security & Compliance | Website code | | | [Wrike](https://www.runsonwhat.com/reverse/wrike) | Collaboration | DNS verification records | | | [ExternalDNS](https://www.runsonwhat.com/reverse/externaldns) | Dev Tools | DNS verification records | | ## FAQ ### What tools does OpenClassrooms use? As of October 2026, runsonwhat has found 42 tools at OpenClassrooms (openclassrooms.com) in public records. Edge & Hosting: Cloudflare and Fastly. Application: jQuery, Vimeo and React. Data & Observability: Google Analytics, Google Tag Manager and Microsoft Clarity. Go-to-market: Google Ads, Meta Pixel and LinkedIn Insight Tag. Company Ops: Microsoft 365, Google Workspace and Apple Business. Last checked October 20, 2026. ### What CRM does OpenClassrooms use? OpenClassrooms uses HubSpot for its CRM, alongside Salesforce, according to runsonwhat (October 2026). runsonwhat found HubSpot through email records that authorize HubSpot and a DNS verification record. HubSpot is used by 95,126 companies runsonwhat tracks. ### What email provider does OpenClassrooms use? OpenClassrooms uses Microsoft 365 for email and office software, alongside Google Workspace and Apple Business, according to runsonwhat (October 2026). runsonwhat found Microsoft 365 through a DNS verification record for Microsoft 365. Microsoft 365 is used by 716,550 companies runsonwhat tracks. ### What does OpenClassrooms use for customer support? OpenClassrooms uses Zendesk for customer support and documentation, alongside Circle, according to runsonwhat (October 2026). runsonwhat found Zendesk through email records that authorize Zendesk and code on openclassrooms.com. Zendesk is used by 42,359 companies runsonwhat tracks. ### What analytics tools does OpenClassrooms use? OpenClassrooms uses Google Analytics for analytics, alongside Google Tag Manager and Microsoft Clarity, according to runsonwhat (October 2026). runsonwhat found Google Analytics through Google Analytics code on openclassrooms.com. Google Analytics is used by 892,574 companies runsonwhat tracks. ### What is OpenClassrooms's website built with? OpenClassrooms uses Squarespace for its website, according to runsonwhat (October 2026). runsonwhat found Squarespace through a subdomain that points at Squarespace, and OpenClassrooms has used it since at least April 2025. Squarespace is used by 33,868 companies runsonwhat tracks. ### How long has OpenClassrooms used Teamtailor? OpenClassrooms has used Teamtailor since at least October 2018, going by the first public certificate of the openclassrooms.com subdomain that points at Teamtailor. Other long-running tools at OpenClassrooms include Fastly (since March 2019), Mailgun (since June 2022) and Squarespace (since April 2025). ### Does OpenClassrooms use jQuery? Yes. runsonwhat found jQuery at OpenClassrooms through jQuery code on openclassrooms.com. jQuery is a Frontend tool used by 922,806 companies runsonwhat tracks. ### Does OpenClassrooms use AI tools? Yes. runsonwhat has found Anthropic and OpenAI at OpenClassrooms; Anthropic, for example, through a DNS verification record for Anthropic. AI services called only from servers leave no public trace, so OpenClassrooms may use more AI tools than these. ### Which companies have a tech stack similar to OpenClassrooms's? The companies with the stacks most like OpenClassrooms' are Udacity, Ohio Farmers Insurance Company, Outschool and Printify Development SIA, according to runsonwhat (October 2026). Each shares 7 to 20 tools with OpenClassrooms, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices. ### How does runsonwhat know what OpenClassrooms uses? runsonwhat reads public records only. Of the 42 tools at OpenClassrooms, 17 were found through DNS records, 14 through code on openclassrooms.com, 6 through subdomains that point at the vendor and 5 through email records. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and openclassrooms.com about monthly. --- Source: runsonwhat, https://www.runsonwhat.com/company/openclassrooms.com (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.