# What does Streamlit use? Streamlit (streamlit.io) shows public evidence of 19 tools, according to runsonwhat (last checked 2026-10-20). - Industry: Software - Size: 11–50 employees - Based in: San Francisco, United States - Founded: 2018 - LinkedIn: https://www.linkedin.com/company/streamlit ## Edge & Hosting | Tool | Category | Evidence | Since | |---|---|---|---| | [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 | | | [Netlify](https://www.runsonwhat.com/reverse/netlify) | Hosting & Cloud | Custom domain, 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 | | | [WorkOS](https://www.runsonwhat.com/reverse/workos) | Auth & Identity | Custom domain | | ## Data & Observability | Tool | Category | Evidence | Since | |---|---|---|---| | [Google Tag Manager](https://www.runsonwhat.com/reverse/gtm) | Analytics | Website code | | | [Segment](https://www.runsonwhat.com/reverse/segment) | Analytics | Website code | | | [Heap](https://www.runsonwhat.com/reverse/heap) | Analytics | Website code | | ## Go-to-market | Tool | Category | Evidence | Since | |---|---|---|---| | [LinkedIn Insight Tag](https://www.runsonwhat.com/reverse/linkedin-insight) | Ads & Pixels | Website code | | | [Mailchimp](https://www.runsonwhat.com/reverse/mailchimp) | Marketing | Email records | | | [HubSpot](https://www.runsonwhat.com/reverse/hubspot) | Sales & CRM | Custom domain, Email records, Website code | | | [HubSpot CMS](https://www.runsonwhat.com/reverse/hubspot-cms) | Website & CMS | Custom domain | | ## 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 | | | [Apple Business](https://www.runsonwhat.com/reverse/apple) | Workspace | DNS verification records | | | [OneTrust](https://www.runsonwhat.com/reverse/onetrust) | Security & Compliance | Website code | | ## FAQ ### What tools does Streamlit use? As of October 2026, runsonwhat has found 19 tools at Streamlit (streamlit.io) in public records. Edge & Hosting: Amazon Web Services, Amazon Route 53 and Netlify. Application: React, Tailwind CSS and Next.js. Data & Observability: Google Tag Manager, Segment and Heap. Go-to-market: LinkedIn Insight Tag, Mailchimp and HubSpot. Company Ops: Google Workspace, SendGrid and Apple Business. Last checked October 20, 2026. ### What cloud does Streamlit run on? Streamlit uses Amazon Web Services for hosting and cloud infrastructure, alongside Netlify, according to runsonwhat (October 2026). runsonwhat found Amazon Web Services through Amazon Web Services code on streamlit.io. Amazon Web Services is used by 146,159 companies runsonwhat tracks. ### What CRM does Streamlit use? Streamlit uses HubSpot for its CRM, according to runsonwhat (October 2026). runsonwhat found HubSpot through a subdomain that points at HubSpot and email records. HubSpot is used by 95,216 companies runsonwhat tracks. ### What email provider does Streamlit use? Streamlit uses Google Workspace for email and office software, alongside Apple Business, according to runsonwhat (October 2026). runsonwhat found Google Workspace through email records that authorize Google Workspace and code on streamlit.io. Google Workspace is used by 406,548 companies runsonwhat tracks. ### What analytics tools does Streamlit use? Streamlit uses Google Tag Manager for analytics, alongside Segment and Heap, according to runsonwhat (October 2026). runsonwhat found Google Tag Manager through Google Tag Manager code on streamlit.io. Google Tag Manager is used by 509,951 companies runsonwhat tracks. ### What is Streamlit's website built with? Streamlit uses HubSpot CMS for its website, according to runsonwhat (October 2026). runsonwhat found HubSpot CMS through a subdomain that points at HubSpot CMS. HubSpot CMS is used by 33,531 companies runsonwhat tracks. ### Does Streamlit use SendGrid? Yes. runsonwhat found SendGrid at Streamlit through email records that authorize SendGrid. SendGrid is a Email Delivery tool used by 195,086 companies runsonwhat tracks. ### Which companies have a tech stack similar to Streamlit's? The companies with the stacks most like Streamlit's are Spellbook, Ridepanda, Mux and Botco.ai, according to runsonwhat (October 2026). Each shares 8 to 14 tools with Streamlit, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices. ### How does runsonwhat know what Streamlit uses? runsonwhat reads public records only. Of the 19 tools at Streamlit, 9 were found through code on streamlit.io, 4 through subdomains that point at the vendor, 3 through DNS records and 3 through email records. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and streamlit.io about monthly. --- Source: runsonwhat, https://www.runsonwhat.com/company/streamlit.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.