# What does WHMCS use? WHMCS (whmcs.com) shows public evidence of 31 tools, according to runsonwhat (last checked 2026-11-08). - Industry: Software - Size: 11–50 employees - Based in: Houston, United States - Founded: 2005 - LinkedIn: https://www.linkedin.com/company/whmcs-ltd ## Edge & Hosting | Tool | Category | Evidence | Since | |---|---|---|---| | [Cloudflare](https://www.runsonwhat.com/reverse/cloudflare) | CDN & Edge | DNS records, Website code | | ## Application | Tool | Category | Evidence | Since | |---|---|---|---| | [Vimeo](https://www.runsonwhat.com/reverse/vimeo) | Media & UI | Website code | | | [YouTube](https://www.runsonwhat.com/reverse/youtube) | Media & UI | Website code | | | [GSAP](https://www.runsonwhat.com/reverse/gsap) | Media & UI | Website code | | | [PayPal](https://www.runsonwhat.com/reverse/paypal) | Payments & Billing | 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 | | ## 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 | | | [Meta Pixel](https://www.runsonwhat.com/reverse/meta-pixel) | Ads & Pixels | DNS verification records, Website code | | | [Yoast SEO](https://www.runsonwhat.com/reverse/yoast) | Website & CMS | Website code | | | [LinkedIn Insight Tag](https://www.runsonwhat.com/reverse/linkedin-insight) | Ads & Pixels | Website code | | | [HubSpot](https://www.runsonwhat.com/reverse/hubspot) | Sales & CRM | Email records, Website code | | | [Zendesk](https://www.runsonwhat.com/reverse/zendesk) | Support & Docs | Email records, Website code | | ## Company Ops | Tool | Category | Evidence | Since | |---|---|---|---| | [Microsoft 365](https://www.runsonwhat.com/reverse/microsoft-365) | Workspace | DNS verification records, 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 | | | [Let's Encrypt](https://www.runsonwhat.com/reverse/letsencrypt) | Security & Compliance | DNS 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 | | | [KnowBe4](https://www.runsonwhat.com/reverse/knowbe4) | Security & Compliance | DNS verification records | | | [Zoom](https://www.runsonwhat.com/reverse/zoom) | Collaboration | DNS verification records | | | [Amazon Trust Services](https://www.runsonwhat.com/reverse/amazon-trust) | Security & Compliance | DNS records | | | [Usercentrics](https://www.runsonwhat.com/reverse/usercentrics) | Security & Compliance | Website code | | | [SparkPost](https://www.runsonwhat.com/reverse/sparkpost) | Email Delivery | Email records, Website code | | | [EqualWeb](https://www.runsonwhat.com/reverse/equalweb) | Security & Compliance | Website code | | | [Nagich](https://www.runsonwhat.com/reverse/nagich) | Security & Compliance | Website code | | | [GitHub](https://www.runsonwhat.com/reverse/github) | Dev Tools | DNS verification records | | ## FAQ ### What tools does WHMCS use? As of November 2026, runsonwhat has found 31 tools at WHMCS (whmcs.com) in public records. Edge & Hosting: Cloudflare. Application: Vimeo, YouTube and GSAP. Data & Observability: Google Analytics, Google Tag Manager and Microsoft Clarity. Go-to-market: WordPress, Google Ads and Meta Pixel. Company Ops: Microsoft 365, Apple Business and Atlassian. Last checked November 8, 2026. ### What CRM does WHMCS use? WHMCS uses HubSpot for its CRM, according to runsonwhat (November 2026). runsonwhat found HubSpot through email records that authorize HubSpot and code on whmcs.com. HubSpot is used by 97,292 companies runsonwhat tracks. ### What email provider does WHMCS use? WHMCS uses Microsoft 365 for email and office software, alongside Apple Business, according to runsonwhat (November 2026). runsonwhat found Microsoft 365 through a DNS verification record for Microsoft 365 and email records. Microsoft 365 is used by 730,709 companies runsonwhat tracks. ### What does WHMCS use for customer support? WHMCS uses Zendesk for customer support and documentation, according to runsonwhat (November 2026). runsonwhat found Zendesk through email records that authorize Zendesk and code on whmcs.com. Zendesk is used by 43,497 companies runsonwhat tracks. ### What payment provider does WHMCS use? WHMCS uses PayPal for payments and billing, according to runsonwhat (November 2026). runsonwhat found PayPal through PayPal code on whmcs.com. PayPal is used by 35,169 companies runsonwhat tracks. ### What analytics tools does WHMCS use? WHMCS uses Google Analytics for analytics, alongside Google Tag Manager and Microsoft Clarity, according to runsonwhat (November 2026). runsonwhat found Google Analytics through Google Analytics code on whmcs.com. Google Analytics is used by 903,803 companies runsonwhat tracks. ### Does WHMCS use Cloudflare? Yes. runsonwhat found Cloudflare at WHMCS through DNS records that point at Cloudflare and code on whmcs.com. Cloudflare is a CDN & Edge tool used by 731,371 companies runsonwhat tracks. ### Which companies have a tech stack similar to WHMCS's? The companies with the stacks most like WHMCS' are Bath Fitter, qodo, Valutare and Yamuno, according to runsonwhat (November 2026). Each shares 7 to 15 tools with WHMCS, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices. ### How does runsonwhat know what WHMCS uses? runsonwhat reads public records only. Of the 31 tools at WHMCS, 14 were found through code on whmcs.com, 14 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 whmcs.com about monthly. --- Source: runsonwhat, https://www.runsonwhat.com/company/whmcs.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.