# What does FLUIDSTACK LIMITED use? FLUIDSTACK LIMITED (fluidstack.io) shows public evidence of 39 tools, according to runsonwhat (last checked 2026-10-07). - Industry: Internet - Size: 11–50 employees - Based in: London, United Kingdom - Founded: 2017 - LinkedIn: https://www.linkedin.com/company/fluidstack ## Edge & Hosting | Tool | Category | Evidence | Since | |---|---|---|---| | [Cloudflare](https://www.runsonwhat.com/reverse/cloudflare) | CDN & Edge | DNS verification records, DNS records, Website code | | | [Vercel](https://www.runsonwhat.com/reverse/vercel) | Hosting & Cloud | Custom domain, DNS verification records, Website code | | ## Application | Tool | Category | Evidence | Since | |---|---|---|---| | [React](https://www.runsonwhat.com/reverse/react) | Frontend | Website code | | | [Tailwind CSS](https://www.runsonwhat.com/reverse/tailwind) | Frontend | Website code | | | [Next.js](https://www.runsonwhat.com/reverse/nextjs) | 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 | | | [Stripe](https://www.runsonwhat.com/reverse/stripe) | Payments & Billing | DNS verification records, Website code | | | [Auth0](https://www.runsonwhat.com/reverse/auth0) | Auth & Identity | Custom domain | | | [WorkOS](https://www.runsonwhat.com/reverse/workos) | Auth & Identity | Custom domain | | ## 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 | | | [Mixpanel](https://www.runsonwhat.com/reverse/mixpanel) | Analytics | DNS verification records, Website code | | | [Better Stack](https://www.runsonwhat.com/reverse/betterstack) | Monitoring | Custom domain | | ## Go-to-market | Tool | Category | Evidence | Since | |---|---|---|---| | [Webflow](https://www.runsonwhat.com/reverse/webflow) | Website & CMS | Custom domain | | | [Sanity](https://www.runsonwhat.com/reverse/sanity) | Website & CMS | 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 | | | [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 | | | [Valimail](https://www.runsonwhat.com/reverse/valimail) | Security & Compliance | Email records | | | [Adobe](https://www.runsonwhat.com/reverse/adobe) | Collaboration | DNS verification records | | | [DocuSign](https://www.runsonwhat.com/reverse/docusign) | Finance & Legal | DNS verification records, Website code | | | [1Password](https://www.runsonwhat.com/reverse/1password) | Security & Compliance | DNS verification records | | | [Smartsheet](https://www.runsonwhat.com/reverse/smartsheet) | Collaboration | DNS verification records | | | [Cursor](https://www.runsonwhat.com/reverse/cursor) | Dev Tools | DNS verification records | | | [Figma](https://www.runsonwhat.com/reverse/figma) | Collaboration | DNS verification records | | | [Box](https://www.runsonwhat.com/reverse/box) | Collaboration | DNS verification records | | | [Rippling](https://www.runsonwhat.com/reverse/rippling) | People & HR | DNS verification records | | | [Uber for Business](https://www.runsonwhat.com/reverse/uber) | Finance & Legal | DNS verification records | | | [Tailscale](https://www.runsonwhat.com/reverse/tailscale) | Security & Compliance | DNS verification records | | | [Parallels](https://www.runsonwhat.com/reverse/parallels) | Dev Tools | DNS verification records | | | [Bluebeam](https://www.runsonwhat.com/reverse/bluebeam) | Collaboration | DNS verification records | | | [Secureframe](https://www.runsonwhat.com/reverse/secureframe) | Security & Compliance | DNS verification records | | ## FAQ ### What tools does FLUIDSTACK use? As of October 2026, runsonwhat has found 39 tools at FLUIDSTACK (fluidstack.io) in public records. Edge & Hosting: Cloudflare and Vercel. Application: React, Tailwind CSS and Next.js. Data & Observability: Google Analytics, Google Tag Manager and web-vitals. Go-to-market: Webflow and Sanity. Company Ops: Microsoft 365, Google Workspace and SendGrid. Last checked October 7, 2026. ### What cloud does FLUIDSTACK run on? FLUIDSTACK uses Vercel for hosting and cloud infrastructure, according to runsonwhat (October 2026). runsonwhat found Vercel through a subdomain that points at Vercel and a DNS verification record. Vercel is used by 45,695 companies runsonwhat tracks. ### What email provider does FLUIDSTACK use? FLUIDSTACK 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 694,624 companies runsonwhat tracks. ### What payment provider does FLUIDSTACK use? FLUIDSTACK uses Stripe for payments and billing, according to runsonwhat (October 2026). runsonwhat found Stripe through a DNS verification record for Stripe and code on fluidstack.io. Stripe is used by 25,522 companies runsonwhat tracks. ### What analytics tools does FLUIDSTACK use? FLUIDSTACK uses Google Analytics for analytics, alongside Google Tag Manager, PostHog and Mixpanel, according to runsonwhat (October 2026). runsonwhat found Google Analytics through Google Analytics code on fluidstack.io. Google Analytics is used by 832,114 companies runsonwhat tracks. ### What is FLUIDSTACK's website built with? FLUIDSTACK uses Webflow for its website, alongside Sanity, according to runsonwhat (October 2026). runsonwhat found Webflow through a subdomain that points at Webflow. Webflow is used by 33,832 companies runsonwhat tracks. ### Does FLUIDSTACK use Cloudflare? Yes. runsonwhat found Cloudflare at FLUIDSTACK through a DNS verification record for Cloudflare and DNS records. Cloudflare is a CDN & Edge tool used by 684,466 companies runsonwhat tracks. ### Does FLUIDSTACK use AI tools? Yes. runsonwhat has found Anthropic and OpenAI at FLUIDSTACK; Anthropic, for example, through a DNS verification record for Anthropic. AI services called only from servers leave no public trace, so FLUIDSTACK may use more AI tools than these. ### Which companies have a tech stack similar to FLUIDSTACK's? The companies with the stacks most like FLUIDSTACK's are SpaceXAI, Lightmatter®, Paramount and Nuvo, according to runsonwhat (October 2026). Each shares 17 to 20 tools with FLUIDSTACK, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices. ### How does runsonwhat know what FLUIDSTACK uses? runsonwhat reads public records only. Of the 39 tools at FLUIDSTACK, 22 were found through DNS records, 8 through code on fluidstack.io, 5 through subdomains that point at the vendor, 3 through email records and 1 through website configuration files. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and fluidstack.io about monthly. --- Source: runsonwhat, https://www.runsonwhat.com/company/fluidstack.io (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.