# What does Chain.io use? Chain.io (chain.io) shows public evidence of 30 tools, according to runsonwhat (last checked 2026-11-01). - Industry: Logistics and Supply Chain - Size: 11–50 employees - Based in: Philadelphia, United States - Founded: 2017 - LinkedIn: https://www.linkedin.com/company/chain.io ## 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 | | | [Amazon Route 53](https://www.runsonwhat.com/reverse/route53) | DNS | DNS records | | | [Amazon CloudFront](https://www.runsonwhat.com/reverse/cloudfront) | CDN & Edge | Website code | | ## Application | Tool | Category | Evidence | Since | |---|---|---|---| | [Vimeo](https://www.runsonwhat.com/reverse/vimeo) | Media & UI | Website code | | | [React](https://www.runsonwhat.com/reverse/react) | Frontend | Website code | | | [Tailwind CSS](https://www.runsonwhat.com/reverse/tailwind) | Frontend | Website code | | | [Auth0](https://www.runsonwhat.com/reverse/auth0) | Auth & Identity | Custom domain | 2018-07 | | [Gatsby](https://www.runsonwhat.com/reverse/gatsby) | Frontend | 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 | | | [Hotjar](https://www.runsonwhat.com/reverse/hotjar) | Analytics | Website code | | | [web-vitals](https://www.runsonwhat.com/reverse/web-vitals) | Monitoring | Website code | | | [Sorry](https://www.runsonwhat.com/reverse/sorryapp) | Monitoring | Custom domain | 2020-12 | ## Go-to-market | Tool | Category | Evidence | Since | |---|---|---|---| | [Google Ads](https://www.runsonwhat.com/reverse/google-ads) | Ads & Pixels | Website code | | | [LinkedIn Insight Tag](https://www.runsonwhat.com/reverse/linkedin-insight) | Ads & Pixels | Website code | | | [Mailchimp](https://www.runsonwhat.com/reverse/mailchimp) | Marketing | Email records, Website code | | | [HubSpot](https://www.runsonwhat.com/reverse/hubspot) | Sales & CRM | Custom domain, Website code | 2017-06 | | [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 | | | [HubSpot CMS](https://www.runsonwhat.com/reverse/hubspot-cms) | Website & CMS | Custom domain | 2017-06 | | [ZoomInfo](https://www.runsonwhat.com/reverse/zoominfo) | Sales & CRM | Website code | | | [Freshdesk](https://www.runsonwhat.com/reverse/freshdesk) | Support & Docs | Custom domain | 2019-07 | | [Sanity](https://www.runsonwhat.com/reverse/sanity) | Website & CMS | Website code | | | [Vector](https://www.runsonwhat.com/reverse/vector) | Sales & CRM | Website code | | ## Company Ops | Tool | Category | Evidence | Since | |---|---|---|---| | [Google Workspace](https://www.runsonwhat.com/reverse/google-workspace) | Workspace | Email records, Website code | | | [SendGrid](https://www.runsonwhat.com/reverse/sendgrid) | Email Delivery | Email records | | | [Mailchimp Transactional](https://www.runsonwhat.com/reverse/mandrill) | Email Delivery | Email records | | ## FAQ ### What tools does Chain.io use? As of November 2026, runsonwhat has found 30 tools at Chain.io (chain.io) in public records. Edge & Hosting: Cloudflare, Amazon Web Services and Amazon Route 53. Application: Vimeo, React and Tailwind CSS. Data & Observability: Google Analytics, Google Tag Manager and Hotjar. Go-to-market: Google Ads, LinkedIn Insight Tag and Mailchimp. Company Ops: Google Workspace, SendGrid and Mailchimp Transactional. Last checked November 1, 2026. ### What cloud does Chain.io run on? Chain.io uses Amazon Web Services for hosting and cloud infrastructure, according to runsonwhat (November 2026). runsonwhat found Amazon Web Services through Amazon Web Services code on chain.io. Amazon Web Services is used by 147,208 companies runsonwhat tracks. ### What CRM does Chain.io use? Chain.io uses HubSpot for its CRM, alongside Salesforce, ZoomInfo and Vector, according to runsonwhat (November 2026). runsonwhat found HubSpot through a subdomain that points at HubSpot and code on chain.io, and Chain.io has used it since at least June 2017. HubSpot is used by 97,125 companies runsonwhat tracks. ### What email provider does Chain.io use? Chain.io uses Google Workspace for email and office software, according to runsonwhat (November 2026). runsonwhat found Google Workspace through email records that authorize Google Workspace and code on chain.io. Google Workspace is used by 416,699 companies runsonwhat tracks. ### What does Chain.io use for customer support? Chain.io uses Zendesk for customer support and documentation, alongside Freshdesk, according to runsonwhat (November 2026). runsonwhat found Zendesk through email records that authorize Zendesk and code on chain.io. Zendesk is used by 43,344 companies runsonwhat tracks. ### What analytics tools does Chain.io use? Chain.io uses Google Analytics for analytics, alongside Google Tag Manager and Hotjar, according to runsonwhat (November 2026). runsonwhat found Google Analytics through Google Analytics code on chain.io. Google Analytics is used by 904,810 companies runsonwhat tracks. ### How long has Chain.io used HubSpot? Chain.io has used HubSpot since at least June 2017, going by the first public certificate of the chain.io subdomain that points at HubSpot. Other long-running tools at Chain.io include HubSpot CMS (since June 2017), Auth0 (since July 2018) and Freshdesk (since July 2019). ### Does Chain.io use Cloudflare? Yes. runsonwhat found Cloudflare at Chain.io through Cloudflare code on chain.io. Cloudflare is a CDN & Edge tool used by 729,918 companies runsonwhat tracks. ### Which companies have a tech stack similar to Chain.io's? The companies with the stacks most like Chain.io's are Text In Church, Health Data Vision, Super Smashing and Pulse Insights, according to runsonwhat (November 2026). Each shares 12 to 17 tools with Chain.io, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices. ### How does runsonwhat know what Chain.io uses? runsonwhat reads public records only. Of the 30 tools at Chain.io, 16 were found through code on chain.io, 6 through email records, 5 through subdomains that point at the vendor, 2 through DNS records and 1 through website configuration files. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and chain.io about monthly. --- Source: runsonwhat, https://www.runsonwhat.com/company/chain.io (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.