# What does FusionAuth use? FusionAuth (fusionauth.io) shows public evidence of 48 tools, according to runsonwhat (last checked 2026-11-13). - Based in: Boulder, United States - LinkedIn: https://www.linkedin.com/company/fusionauth ## 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 | |---|---|---|---| | [jQuery](https://www.runsonwhat.com/reverse/jquery) | 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 | | | [MCP Registry](https://www.runsonwhat.com/reverse/mcp-registry) | AI | DNS verification 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 | | | [web-vitals](https://www.runsonwhat.com/reverse/web-vitals) | Monitoring | Website code | | | [PostHog](https://www.runsonwhat.com/reverse/posthog) | Analytics | Website code | | | [Atlassian Statuspage](https://www.runsonwhat.com/reverse/statuspage) | Monitoring | Custom domain | 2025-06 | | [Intellimize](https://www.runsonwhat.com/reverse/intellimize) | Flags & Experiments | Website code | | | [Dreamdata](https://www.runsonwhat.com/reverse/dreamdata) | Analytics | Website code | | | [Marketo Measure](https://www.runsonwhat.com/reverse/marketo-measure) | Analytics | Website code | | ## Go-to-market | Tool | Category | Evidence | Since | |---|---|---|---| | [Meta Pixel](https://www.runsonwhat.com/reverse/meta-pixel) | Ads & Pixels | DNS verification records | | | [Mailchimp](https://www.runsonwhat.com/reverse/mailchimp) | Marketing | Website code | | | [HubSpot](https://www.runsonwhat.com/reverse/hubspot) | Sales & CRM | Custom domain, Website code | | | [Zendesk](https://www.runsonwhat.com/reverse/zendesk) | Support & Docs | Email records | | | [Webflow](https://www.runsonwhat.com/reverse/webflow) | Website & CMS | Website code | | | [HubSpot CMS](https://www.runsonwhat.com/reverse/hubspot-cms) | Website & CMS | Custom domain | | | [Reddit Ads](https://www.runsonwhat.com/reverse/reddit-ads) | Ads & Pixels | Website code | | | [Marketo](https://www.runsonwhat.com/reverse/marketo) | Marketing | Website code | | | [G2](https://www.runsonwhat.com/reverse/g2) | Marketing | Website code | | | [Vector](https://www.runsonwhat.com/reverse/vector) | Sales & CRM | Website code | | | [Common Room](https://www.runsonwhat.com/reverse/commonroom) | Sales & CRM | Website code | | | [Plain](https://www.runsonwhat.com/reverse/plain) | Support & Docs | DNS verification records | | ## 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 | | | [SendGrid](https://www.runsonwhat.com/reverse/sendgrid) | Email Delivery | 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 | | | [Let's Encrypt](https://www.runsonwhat.com/reverse/letsencrypt) | Security & Compliance | DNS records | | | [CookieYes](https://www.runsonwhat.com/reverse/cookieyes) | Security & Compliance | Website code | | | [Sectigo](https://www.runsonwhat.com/reverse/sectigo) | Security & Compliance | DNS records | | | [Google Trust Services](https://www.runsonwhat.com/reverse/google-trust) | Security & Compliance | DNS records | | | [Adobe](https://www.runsonwhat.com/reverse/adobe) | Collaboration | DNS verification records | | | [Zoom](https://www.runsonwhat.com/reverse/zoom) | Collaboration | DNS verification records | | | [dmarcian](https://www.runsonwhat.com/reverse/dmarcian) | Security & Compliance | Email records | | | [EasyDMARC](https://www.runsonwhat.com/reverse/easydmarc) | Security & Compliance | DNS verification records, Email records | | | [Slack](https://www.runsonwhat.com/reverse/slack) | Collaboration | DNS verification records | | | [1Password](https://www.runsonwhat.com/reverse/1password) | Security & Compliance | DNS verification records | | | [JetBrains](https://www.runsonwhat.com/reverse/jetbrains) | Dev Tools | DNS verification records | | | [Linear](https://www.runsonwhat.com/reverse/linear) | Dev Tools | DNS verification records | | | [Secureframe](https://www.runsonwhat.com/reverse/secureframe) | Security & Compliance | Custom domain | | ## Recent changes at FusionAuth - 2026-11-13: started using [Zoom](https://www.runsonwhat.com/reverse/zoom) - 2026-11-06: started using [OpenAI](https://www.runsonwhat.com/reverse/openai) ## FAQ ### What tools does FusionAuth use? As of November 2026, runsonwhat has found 48 tools at FusionAuth (fusionauth.io) in public records. Edge & Hosting: Cloudflare, Amazon Web Services and Amazon Route 53. Application: jQuery, Anthropic and OpenAI. Data & Observability: Google Analytics, Google Tag Manager and web-vitals. Go-to-market: Meta Pixel, Mailchimp and HubSpot. Company Ops: Microsoft 365, Google Workspace and SendGrid. Last checked November 13, 2026. ### What cloud does FusionAuth run on? FusionAuth 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 fusionauth.io. Amazon Web Services is used by 147,744 companies runsonwhat tracks. ### What CRM does FusionAuth use? FusionAuth uses HubSpot for its CRM, alongside Vector and Common Room, according to runsonwhat (November 2026). runsonwhat found HubSpot through a subdomain that points at HubSpot and code on fusionauth.io. HubSpot is used by 98,234 companies runsonwhat tracks. ### What email provider does FusionAuth use? FusionAuth uses Microsoft 365 for email and office software, alongside Google Workspace and Apple Business, according to runsonwhat (November 2026). runsonwhat found Microsoft 365 through a DNS verification record for Microsoft 365. Microsoft 365 is used by 739,101 companies runsonwhat tracks. ### What does FusionAuth use for customer support? FusionAuth uses Zendesk for customer support and documentation, alongside Plain, according to runsonwhat (November 2026). runsonwhat found Zendesk through email records that authorize Zendesk. Zendesk is used by 43,919 companies runsonwhat tracks. ### What analytics tools does FusionAuth use? FusionAuth uses Google Analytics for analytics, alongside Google Tag Manager, PostHog and Dreamdata, according to runsonwhat (November 2026). runsonwhat found Google Analytics through Google Analytics code on fusionauth.io. Google Analytics is used by 904,815 companies runsonwhat tracks. ### How long has FusionAuth used Atlassian Statuspage? FusionAuth has used Atlassian Statuspage since at least June 2025, going by the first public certificate of the fusionauth.io subdomain that points at Atlassian Statuspage. ### Does FusionAuth use jQuery? Yes. runsonwhat found jQuery at FusionAuth through jQuery code on fusionauth.io. jQuery is a Frontend tool used by 927,588 companies runsonwhat tracks. ### Does FusionAuth use AI tools? Yes. runsonwhat has found Anthropic, OpenAI and MCP Registry at FusionAuth; Anthropic, for example, through a DNS verification record for Anthropic. AI services called only from servers leave no public trace, so FusionAuth may use more AI tools than these. ### Has FusionAuth changed tools recently? Yes. On runsonwhat's rechecks, FusionAuth started using Zoom and OpenAI (latest on November 13, 2026). A change counts only between two checks of fusionauth.io done the same way. ### Which companies have a tech stack similar to FusionAuth's? The companies with the stacks most like FusionAuth's are Port, n8n, E2B and Sourcegraph, according to runsonwhat (November 2026). Each shares 14 to 26 tools with FusionAuth, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices. ### How does runsonwhat know what FusionAuth uses? runsonwhat reads public records only. Of the 48 tools at FusionAuth, 20 were found through DNS records, 19 through code on fusionauth.io, 4 through email records, 4 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 fusionauth.io about monthly. --- Source: runsonwhat, https://www.runsonwhat.com/company/fusionauth.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.