# What does Building Stack™ use? Building Stack™ (buildingstack.com) shows public evidence of 29 tools, according to runsonwhat (last checked 2026-10-19). - Industry: Real Estate - Size: 11–50 employees - Based in: Westmount, Canada - Founded: 2009 - LinkedIn: https://www.linkedin.com/company/buildingstack ## Edge & Hosting | Tool | Category | Evidence | Since | |---|---|---|---| | [Cloudflare](https://www.runsonwhat.com/reverse/cloudflare) | CDN & Edge | DNS records, Email records, Website code | | | [Microsoft Azure](https://www.runsonwhat.com/reverse/azure) | Hosting & Cloud | Custom domain | 2019-03 | ## Application | Tool | Category | Evidence | Since | |---|---|---|---| | [jQuery](https://www.runsonwhat.com/reverse/jquery) | Frontend | Website code | | | [Google Fonts](https://www.runsonwhat.com/reverse/google-fonts) | Media & UI | Website code | | | [Vimeo](https://www.runsonwhat.com/reverse/vimeo) | Media & UI | Website code | | | [YouTube](https://www.runsonwhat.com/reverse/youtube) | Media & UI | Website code | | | [Anthropic](https://www.runsonwhat.com/reverse/anthropic) | AI | DNS verification records | | | [AddToAny](https://www.runsonwhat.com/reverse/addtoany) | Media & UI | Website code | | | [Chargebee](https://www.runsonwhat.com/reverse/chargebee) | Payments & Billing | Email records | | ## Data & Observability | Tool | Category | Evidence | Since | |---|---|---|---| | [Google Analytics](https://www.runsonwhat.com/reverse/ga) | Analytics | Website code | | | [PagerDuty](https://www.runsonwhat.com/reverse/pagerduty) | Monitoring | Custom domain | 2025-08 | ## 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 | | | [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 | | | [Ahrefs](https://www.runsonwhat.com/reverse/ahrefs) | Marketing | DNS verification records | | | [Intercom](https://www.runsonwhat.com/reverse/intercom) | Support & Docs | 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, Website code | | | [reCAPTCHA](https://www.runsonwhat.com/reverse/recaptcha) | Security & Compliance | Website code | | | [SendGrid](https://www.runsonwhat.com/reverse/sendgrid) | Email Delivery | Email records, Website code | | | [OneTrust](https://www.runsonwhat.com/reverse/onetrust) | Security & Compliance | Website code | | | [Valimail](https://www.runsonwhat.com/reverse/valimail) | Security & Compliance | Email records | | | [KnowBe4](https://www.runsonwhat.com/reverse/knowbe4) | Security & Compliance | DNS verification records | | | [Mailjet](https://www.runsonwhat.com/reverse/mailjet) | Email Delivery | Email records | | | [Rippling](https://www.runsonwhat.com/reverse/rippling) | People & HR | DNS verification records | | | [Detectify](https://www.runsonwhat.com/reverse/detectify) | Security & Compliance | DNS verification records, Website code | | ## FAQ ### What tools does Building Stack™ use? As of October 2026, runsonwhat has found 29 tools at Building Stack™ (buildingstack.com) in public records. Edge & Hosting: Cloudflare and Microsoft Azure. Application: jQuery, Google Fonts and Vimeo. Data & Observability: Google Analytics and PagerDuty. Go-to-market: WordPress, Google Ads and Yoast SEO. Company Ops: Microsoft 365, Google Workspace and reCAPTCHA. Last checked October 19, 2026. ### What cloud does Building Stack™ run on? Building Stack™ uses Microsoft Azure for hosting and cloud infrastructure, according to runsonwhat (October 2026). runsonwhat found Microsoft Azure through a subdomain that points at Microsoft Azure, and Building Stack™ has used it since at least March 2019. Microsoft Azure is used by 47,039 companies runsonwhat tracks. ### What CRM does Building Stack™ use? Building Stack™ uses HubSpot for its CRM, according to runsonwhat (October 2026). runsonwhat found HubSpot through email records that authorize HubSpot. HubSpot is used by 94,334 companies runsonwhat tracks. ### What email provider does Building Stack™ use? Building Stack™ uses Microsoft 365 for email and office software, alongside Google Workspace, according to runsonwhat (October 2026). runsonwhat found Microsoft 365 through a DNS verification record for Microsoft 365. Microsoft 365 is used by 712,560 companies runsonwhat tracks. ### What does Building Stack™ use for customer support? Building Stack™ uses Intercom for customer support and documentation, according to runsonwhat (October 2026). runsonwhat found Intercom through Intercom code on buildingstack.com. Intercom is used by 8,854 companies runsonwhat tracks. ### What payment provider does Building Stack™ use? Building Stack™ uses Chargebee for payments and billing, according to runsonwhat (October 2026). runsonwhat found Chargebee through email records that authorize Chargebee. Chargebee is used by 521 companies runsonwhat tracks. ### How long has Building Stack™ used Microsoft Azure? Building Stack™ has used Microsoft Azure since at least March 2019, going by the first public certificate of the buildingstack.com subdomain that points at Microsoft Azure. Other long-running tools at Building Stack™ include PagerDuty (since August 2025). ### Does Building Stack™ use jQuery? Yes. runsonwhat found jQuery at Building Stack™ through jQuery code on buildingstack.com. jQuery is a Frontend tool used by 918,353 companies runsonwhat tracks. ### Does Building Stack™ use AI tools? Yes. runsonwhat has found Anthropic at Building Stack™; Anthropic, for example, through a DNS verification record for Anthropic. AI services called only from servers leave no public trace, so Building Stack™ may use more AI tools than these. ### Which companies have a tech stack similar to Building Stack™'s? The companies with the stacks most like Building Stack™'s are Lifen, Paper, CloudLink and Zuma, according to runsonwhat (October 2026). Each shares 8 to 14 tools with Building Stack™, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices. ### How does runsonwhat know what Building Stack™ uses? runsonwhat reads public records only. Of the 29 tools at Building Stack™, 13 were found through code on buildingstack.com, 8 through DNS records, 6 through email records and 2 through subdomains that point at the vendor. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and buildingstack.com about monthly. --- Source: runsonwhat, https://www.runsonwhat.com/company/buildingstack.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.