# What does OpenX use? OpenX (openx.com) shows public evidence of 33 tools, according to runsonwhat (last checked 2026-10-10). - Industry: Online Advertising - Size: 201–1,000 employees - Based in: Pasadena, United States - Founded: 2008 - LinkedIn: https://www.linkedin.com/company/openx ## Edge & Hosting | Tool | Category | Evidence | Since | |---|---|---|---| | [Cloudflare](https://www.runsonwhat.com/reverse/cloudflare) | CDN & Edge | Website code | | | [Amazon Web Services](https://www.runsonwhat.com/reverse/aws) | Hosting & Cloud | Website code | | | [Google Cloud](https://www.runsonwhat.com/reverse/gcp) | Hosting & Cloud | Custom domain, DNS records | 2018-05 | | [WP Engine](https://www.runsonwhat.com/reverse/wpengine) | Hosting & Cloud | Website code | | ## Application | Tool | Category | Evidence | Since | |---|---|---|---| | [Anthropic](https://www.runsonwhat.com/reverse/anthropic) | AI | DNS verification records | | | [OpenAI](https://www.runsonwhat.com/reverse/openai) | AI | DNS verification records | | | [Firebase](https://www.runsonwhat.com/reverse/firebase) | Backend & Database | DNS verification records, Email records | | ## 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 | | | [Pendo](https://www.runsonwhat.com/reverse/pendo) | Analytics | DNS verification records | | ## 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 | | | [HubSpot](https://www.runsonwhat.com/reverse/hubspot) | Sales & CRM | Email records, Website code | | | [Marketo](https://www.runsonwhat.com/reverse/marketo) | Marketing | Custom domain, Email records | 2022-08 | ## 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, Website code | | | [Apple Business](https://www.runsonwhat.com/reverse/apple) | Workspace | DNS verification records | | | [Atlassian](https://www.runsonwhat.com/reverse/atlassian) | Dev Tools | DNS verification records | | | [Amazon SES](https://www.runsonwhat.com/reverse/ses) | Email Delivery | Email records, Website code | | | [Let's Encrypt](https://www.runsonwhat.com/reverse/letsencrypt) | Security & Compliance | DNS records | | | [GlobalSign](https://www.runsonwhat.com/reverse/globalsign) | Security & Compliance | DNS verification records | | | [Sectigo](https://www.runsonwhat.com/reverse/sectigo) | Security & Compliance | DNS records | | | [DigiCert](https://www.runsonwhat.com/reverse/digicert) | Security & Compliance | DNS records | | | [Google Trust Services](https://www.runsonwhat.com/reverse/google-trust) | Security & Compliance | DNS records | | | [OneTrust](https://www.runsonwhat.com/reverse/onetrust) | Security & Compliance | Website code | | | [DocuSign](https://www.runsonwhat.com/reverse/docusign) | Finance & Legal | DNS verification records, Website code | | | [Webex](https://www.runsonwhat.com/reverse/webex) | Collaboration | DNS verification records | | | [Jamf](https://www.runsonwhat.com/reverse/jamf) | Security & Compliance | DNS verification records | | | [Dropbox](https://www.runsonwhat.com/reverse/dropbox) | Collaboration | DNS verification records, Website code | | | [Docker](https://www.runsonwhat.com/reverse/docker) | Dev Tools | DNS verification records | | | [Zapier](https://www.runsonwhat.com/reverse/zapier) | Dev Tools | DNS verification records | | ## FAQ ### What tools does OpenX use? As of October 2026, runsonwhat has found 33 tools at OpenX (openx.com) in public records. Edge & Hosting: Cloudflare, Amazon Web Services and Google Cloud. Application: Anthropic, OpenAI and Firebase. Data & Observability: Google Analytics, Google Tag Manager and Pendo. Go-to-market: WordPress, Google Ads and Yoast SEO. Company Ops: Microsoft 365, Google Workspace and Apple Business. Last checked October 10, 2026. ### What cloud does OpenX run on? OpenX uses Amazon Web Services for hosting and cloud infrastructure, alongside Google Cloud and WP Engine, according to runsonwhat (October 2026). runsonwhat found Amazon Web Services through Amazon Web Services code on openx.com. Amazon Web Services is used by 144,878 companies runsonwhat tracks. ### What CRM does OpenX use? OpenX uses HubSpot for its CRM, according to runsonwhat (October 2026). runsonwhat found HubSpot through email records that authorize HubSpot and code on openx.com. HubSpot is used by 92,110 companies runsonwhat tracks. ### What email provider does OpenX use? OpenX 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 701,710 companies runsonwhat tracks. ### What analytics tools does OpenX use? OpenX uses Google Analytics for analytics, alongside Google Tag Manager and Pendo, according to runsonwhat (October 2026). runsonwhat found Google Analytics through Google Analytics code on openx.com. Google Analytics is used by 853,379 companies runsonwhat tracks. ### What is OpenX's website built with? OpenX uses WordPress for its website, alongside Yoast SEO, according to runsonwhat (October 2026). runsonwhat found WordPress through WordPress code on openx.com. WordPress is used by 582,767 companies runsonwhat tracks. ### How long has OpenX used Google Cloud? OpenX has used Google Cloud since at least May 2018, going by the first public certificate of the openx.com subdomain that points at Google Cloud. Other long-running tools at OpenX include Marketo (since August 2022). ### Does OpenX use Cloudflare? Yes. runsonwhat found Cloudflare at OpenX through Cloudflare code on openx.com. Cloudflare is a CDN & Edge tool used by 692,707 companies runsonwhat tracks. ### Does OpenX use AI tools? Yes. runsonwhat has found Anthropic and OpenAI at OpenX; Anthropic, for example, through a DNS verification record for Anthropic. AI services called only from servers leave no public trace, so OpenX may use more AI tools than these. ### Which companies have a tech stack similar to OpenX's? The companies with the stacks most like OpenX's are Forter, Experian, Cover Genius and CARET, according to runsonwhat (October 2026). Each shares 14 to 20 tools with OpenX, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices. ### How does runsonwhat know what OpenX uses? runsonwhat reads public records only. Of the 33 tools at OpenX, 18 were found through DNS records, 9 through code on openx.com, 3 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 openx.com about monthly. --- Source: runsonwhat, https://www.runsonwhat.com/company/openx.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.