# What does Brain Co. use? Brain Co. (brain.co) shows public evidence of 13 tools, according to runsonwhat (last checked 2026-10-19). ## Edge & Hosting | Tool | Category | Evidence | Since | |---|---|---|---| | [Cloudflare](https://www.runsonwhat.com/reverse/cloudflare) | CDN & Edge | DNS records | | | [Vercel](https://www.runsonwhat.com/reverse/vercel) | Hosting & Cloud | Custom domain, DNS records, Website code | | ## Application | Tool | Category | Evidence | Since | |---|---|---|---| | [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 | | ## Go-to-market | Tool | Category | Evidence | Since | |---|---|---|---| | [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 | | | [SendGrid](https://www.runsonwhat.com/reverse/sendgrid) | Email Delivery | Email records | | | [Apple Business](https://www.runsonwhat.com/reverse/apple) | Workspace | DNS verification records | | | [Notion](https://www.runsonwhat.com/reverse/notion) | Collaboration | DNS verification records | | | [Oneleet](https://www.runsonwhat.com/reverse/oneleet) | Security & Compliance | Custom domain, DNS verification records | | ## Hiring at Brain Co. 39 open roles on its public job board: Data & AI 22, Other 5, Engineering 4, Product & Design 3, Sales 2, Finance & Legal 1. ## FAQ ### What tools does Brain use? As of October 2026, runsonwhat has found 13 tools at Brain (brain.co) in public records. Edge & Hosting: Cloudflare and Vercel. Application: Next.js, Anthropic and OpenAI. Go-to-market: Sanity. Company Ops: Microsoft 365, Google Workspace and SendGrid. Last checked October 19, 2026. ### What cloud does Brain run on? Brain uses Vercel for hosting and cloud infrastructure, according to runsonwhat (October 2026). runsonwhat found Vercel through a subdomain that points at Vercel and DNS records. Vercel is used by 47,135 companies runsonwhat tracks. ### What email provider does Brain use? Brain 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 705,083 companies runsonwhat tracks. ### What is Brain's website built with? Brain uses Sanity for its website, according to runsonwhat (October 2026). runsonwhat found Sanity through Sanity code on brain.co. Sanity is used by 4,758 companies runsonwhat tracks. ### Does Brain use Cloudflare? Yes. runsonwhat found Cloudflare at Brain through DNS records that point at Cloudflare. Cloudflare is a CDN & Edge tool used by 695,506 companies runsonwhat tracks. ### Does Brain use AI tools? Yes. runsonwhat has found Anthropic and OpenAI at Brain; Anthropic, for example, through a DNS verification record for Anthropic. AI services called only from servers leave no public trace, so Brain may use more AI tools than these. ### Is Brain hiring? Yes. As of October 2026, Brain has 39 open roles on its public Ashby job board, most in data & AI (22), engineering (4) and product & design (3). 9 were posted in the last 30 days. ### Which companies have a tech stack similar to Brain's? The companies with the stacks most like Brain's are Selection Lab, River Markets, Promptless Documentation and Doowii, according to runsonwhat (October 2026). Each shares 4 to 4 tools with Brain, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices. ### How does runsonwhat know what Brain uses? runsonwhat reads public records only. Of the 13 tools at Brain, 7 were found through DNS records, 2 through email records, 2 through code on brain.co 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 brain.co about monthly. --- Source: runsonwhat, https://www.runsonwhat.com/company/brain.co (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.