# What does BuzzSumo.com use? BuzzSumo.com (buzzsumo.com) shows public evidence of 22 tools, according to runsonwhat (last checked 2026-10-20). - Industry: Software - Size: 1–10 employees - Based in: Brighton, United Kingdom - Founded: 2013 - LinkedIn: https://www.linkedin.com/company/buzzsumo ## Edge & Hosting | Tool | Category | Evidence | Since | |---|---|---|---| | [Cloudflare](https://www.runsonwhat.com/reverse/cloudflare) | CDN & Edge | DNS records, Email records, Website code | | | [Google Cloud](https://www.runsonwhat.com/reverse/gcp) | Hosting & Cloud | Custom domain | | ## Application | Tool | Category | Evidence | Since | |---|---|---|---| | [Google Fonts](https://www.runsonwhat.com/reverse/google-fonts) | Media & UI | Website code | | | [Vimeo](https://www.runsonwhat.com/reverse/vimeo) | Media & UI | Website code | | | [YouTube](https://www.runsonwhat.com/reverse/youtube) | Media & UI | Website code | | | [Wistia](https://www.runsonwhat.com/reverse/wistia) | Media & UI | Website code | | ## Data & Observability | Tool | Category | Evidence | Since | |---|---|---|---| | [Optimizely](https://www.runsonwhat.com/reverse/optimizely) | Flags & Experiments | Website code | | | [Segment](https://www.runsonwhat.com/reverse/segment) | Analytics | Website code | | ## Go-to-market | Tool | Category | Evidence | Since | |---|---|---|---| | [WordPress](https://www.runsonwhat.com/reverse/wordpress) | Website & CMS | Website code | | | [Meta Pixel](https://www.runsonwhat.com/reverse/meta-pixel) | Ads & Pixels | Website code | | | [Mailchimp](https://www.runsonwhat.com/reverse/mailchimp) | Marketing | Email records | | | [HubSpot](https://www.runsonwhat.com/reverse/hubspot) | Sales & CRM | Email records, Website code | | | [StackAdapt](https://www.runsonwhat.com/reverse/stackadapt) | Ads & Pixels | Website code | | | [ReadMe](https://www.runsonwhat.com/reverse/readme) | Support & Docs | Custom domain | | | [PartnerStack](https://www.runsonwhat.com/reverse/partnerstack) | Marketing | 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 | | | [Google Workspace](https://www.runsonwhat.com/reverse/google-workspace) | Workspace | Email records | | | [Mailchimp Transactional](https://www.runsonwhat.com/reverse/mandrill) | Email Delivery | Email records | | | [Mailjet](https://www.runsonwhat.com/reverse/mailjet) | Email Delivery | Email records, Website code | | | [Postmark](https://www.runsonwhat.com/reverse/postmark) | Email Delivery | Email records | | | [Box](https://www.runsonwhat.com/reverse/box) | Collaboration | DNS verification records | | ## FAQ ### What tools does BuzzSumo.com use? As of October 2026, runsonwhat has found 22 tools at BuzzSumo.com (buzzsumo.com) in public records. Edge & Hosting: Cloudflare and Google Cloud. Application: Google Fonts, Vimeo and YouTube. Data & Observability: Optimizely and Segment. Go-to-market: WordPress, Meta Pixel and Mailchimp. Company Ops: Microsoft 365, Google Workspace and Mailchimp Transactional. Last checked October 20, 2026. ### What cloud does BuzzSumo.com run on? BuzzSumo.com uses Google Cloud for hosting and cloud infrastructure, according to runsonwhat (October 2026). runsonwhat found Google Cloud through a subdomain that points at Google Cloud. Google Cloud is used by 75,723 companies runsonwhat tracks. ### What CRM does BuzzSumo.com use? BuzzSumo.com uses HubSpot for its CRM, according to runsonwhat (October 2026). runsonwhat found HubSpot through email records that authorize HubSpot and code on buzzsumo.com. HubSpot is used by 93,822 companies runsonwhat tracks. ### What email provider does BuzzSumo.com use? BuzzSumo.com uses Microsoft 365 for email and office software, alongside Google Workspace, 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 710,115 companies runsonwhat tracks. ### What does BuzzSumo.com use for customer support? BuzzSumo.com uses ReadMe for customer support and documentation, according to runsonwhat (October 2026). runsonwhat found ReadMe through a subdomain that points at ReadMe. ReadMe is used by 1,166 companies runsonwhat tracks. ### What analytics tools does BuzzSumo.com use? BuzzSumo.com uses Segment for analytics, according to runsonwhat (October 2026). runsonwhat found Segment through Segment code on buzzsumo.com. Segment is used by 6,585 companies runsonwhat tracks. ### Does BuzzSumo.com use Google Fonts? Yes. runsonwhat found Google Fonts at BuzzSumo.com through Google Fonts code on buzzsumo.com. Google Fonts is a Media & UI tool used by 808,111 companies runsonwhat tracks. ### Which companies have a tech stack similar to BuzzSumo.com's? The companies with the stacks most like BuzzSumo.com's are Jane, ActiveCampaign, Gorgias and Livestorm, according to runsonwhat (October 2026). Each shares 9 to 12 tools with BuzzSumo.com, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices. ### How does runsonwhat know what BuzzSumo.com uses? runsonwhat reads public records only. Of the 22 tools at BuzzSumo.com, 10 were found through code on buzzsumo.com, 6 through email records, 4 through DNS records 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 buzzsumo.com about monthly. --- Source: runsonwhat, https://www.runsonwhat.com/company/buzzsumo.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.