# What does SF Tensor use? SF Tensor (sf-tensor.com) shows public evidence of 21 tools, according to runsonwhat (last checked 2026-10-16). - Industry: Infrastructure - Size: 1–10 employees - Based in: San Francisco, United States - LinkedIn: https://www.linkedin.com/company/sftensor ## Edge & Hosting | Tool | Category | Evidence | Since | |---|---|---|---| | [Cloudflare](https://www.runsonwhat.com/reverse/cloudflare) | CDN & Edge | DNS records, Website code | | | [Vercel](https://www.runsonwhat.com/reverse/vercel) | Hosting & Cloud | Custom domain, DNS verification records, DNS 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 | | ## 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 | | | [Vercel Analytics](https://www.runsonwhat.com/reverse/vercel-analytics) | Analytics | Website code | | | [Better Stack](https://www.runsonwhat.com/reverse/betterstack) | Monitoring | Custom domain | | ## 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 | | | [Reddit Ads](https://www.runsonwhat.com/reverse/reddit-ads) | Ads & Pixels | 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 | | | [Slack](https://www.runsonwhat.com/reverse/slack) | Collaboration | DNS verification records | | | [Vanta](https://www.runsonwhat.com/reverse/vanta) | Security & Compliance | Custom domain | | | [Uber for Business](https://www.runsonwhat.com/reverse/uber) | Finance & Legal | DNS verification records | | ## FAQ ### What tools does SF Tensor use? As of October 2026, runsonwhat has found 21 tools at SF Tensor (sf-tensor.com) 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: Google Ads, LinkedIn Insight Tag and Reddit Ads. Company Ops: Microsoft 365, Apple Business and Slack. Last checked October 16, 2026. ### What cloud does SF Tensor run on? SF Tensor 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 46,485 companies runsonwhat tracks. ### What email provider does SF Tensor use? SF Tensor uses Microsoft 365 for email and office software, alongside Apple Business, according to runsonwhat (October 2026). runsonwhat found Microsoft 365 through a DNS verification record for Microsoft 365 and email records. Microsoft 365 is used by 701,706 companies runsonwhat tracks. ### What analytics tools does SF Tensor use? SF Tensor uses Google Analytics for analytics, alongside Google Tag Manager and Vercel Analytics, according to runsonwhat (October 2026). runsonwhat found Google Analytics through Google Analytics code on sf-tensor.com. Google Analytics is used by 852,533 companies runsonwhat tracks. ### What monitoring tools does SF Tensor use? SF Tensor uses web-vitals for monitoring, alongside Better Stack, according to runsonwhat (October 2026). runsonwhat found web-vitals through web-vitals code on sf-tensor.com. web-vitals is used by 26,044 companies runsonwhat tracks. ### Does SF Tensor use Cloudflare? Yes. runsonwhat found Cloudflare at SF Tensor through DNS records that point at Cloudflare and code on sf-tensor.com. Cloudflare is a CDN & Edge tool used by 692,352 companies runsonwhat tracks. ### Does SF Tensor use AI tools? Yes. runsonwhat has found Anthropic and OpenAI at SF Tensor; Anthropic, for example, through a DNS verification record for Anthropic. AI services called only from servers leave no public trace, so SF Tensor may use more AI tools than these. ### Which companies have a tech stack similar to SF Tensor's? The companies with the stacks most like SF Tensor's are Respan, Gloo Chat, Equerra and Gojiberry AI, according to runsonwhat (October 2026). Each shares 5 to 7 tools with SF Tensor, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices. ### How does runsonwhat know what SF Tensor uses? runsonwhat reads public records only. Of the 21 tools at SF Tensor, 10 were found through code on sf-tensor.com, 8 through DNS records and 3 through subdomains that point at the vendor. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and sf-tensor.com about monthly. --- Source: runsonwhat, https://www.runsonwhat.com/company/sf-tensor.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.