# What does Default use? Default (default.com) shows public evidence of 47 tools, according to runsonwhat (last checked 2026-10-19). - Industry: Software - Size: 11–50 employees - Based in: New York, United States - Founded: 2021 - LinkedIn: https://www.linkedin.com/company/withdefault ## Edge & Hosting | Tool | Category | Evidence | Since | |---|---|---|---| | [Cloudflare](https://www.runsonwhat.com/reverse/cloudflare) | CDN & Edge | Website code | | | [Amazon Web Services](https://www.runsonwhat.com/reverse/aws) | Hosting & Cloud | Subprocessor list, Website code | | | [Amazon Route 53](https://www.runsonwhat.com/reverse/route53) | DNS | DNS records | | | [Amazon CloudFront](https://www.runsonwhat.com/reverse/cloudfront) | CDN & Edge | Custom domain | 2024-09 | | [Vercel](https://www.runsonwhat.com/reverse/vercel) | Hosting & Cloud | Custom domain, DNS verification records, DNS records, Website code | 2022-03 | | [Railway](https://www.runsonwhat.com/reverse/railway) | Hosting & Cloud | Subprocessor list | | ## 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 | | | [OpenAI](https://www.runsonwhat.com/reverse/openai) | AI | Subprocessor list | | | [Supabase](https://www.runsonwhat.com/reverse/supabase) | Backend & Database | Subprocessor list | | | [Twilio](https://www.runsonwhat.com/reverse/twilio) | Backend & Database | Subprocessor list | | | [Perplexity](https://www.runsonwhat.com/reverse/perplexity) | AI | Subprocessor list | | | [WorkOS](https://www.runsonwhat.com/reverse/workos) | Auth & Identity | Custom domain, Subprocessor list | 2025-03 | ## 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 | | | [Hotjar](https://www.runsonwhat.com/reverse/hotjar) | Analytics | Website code | | | [Datadog](https://www.runsonwhat.com/reverse/datadog) | Monitoring | Subprocessor list | | | [PostHog](https://www.runsonwhat.com/reverse/posthog) | Analytics | Subprocessor list | | | [Vercel Analytics](https://www.runsonwhat.com/reverse/vercel-analytics) | Analytics | Website code | | | [Atlassian Statuspage](https://www.runsonwhat.com/reverse/statuspage) | Monitoring | Custom domain | | | [ClickHouse](https://www.runsonwhat.com/reverse/clickhouse) | Data Pipeline | Subprocessor list | | | [Databricks](https://www.runsonwhat.com/reverse/databricks) | Data Pipeline | Subprocessor list | | ## 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 | | | [HubSpot](https://www.runsonwhat.com/reverse/hubspot) | Sales & CRM | Subprocessor list | | | [Salesforce](https://www.runsonwhat.com/reverse/salesforce) | Sales & CRM | Subprocessor list | | | [Calendly](https://www.runsonwhat.com/reverse/calendly) | Sales & CRM | Subprocessor list | | | [ZoomInfo](https://www.runsonwhat.com/reverse/zoominfo) | Sales & CRM | Website code, Subprocessor list | | | [Apollo.io](https://www.runsonwhat.com/reverse/apollo) | Sales & CRM | Subprocessor list | | | [Demandbase](https://www.runsonwhat.com/reverse/demandbase) | Sales & CRM | Subprocessor list | | | [Marketo](https://www.runsonwhat.com/reverse/marketo) | Marketing | Subprocessor list | | | [Sanity](https://www.runsonwhat.com/reverse/sanity) | Website & CMS | Website code | | | [Vector](https://www.runsonwhat.com/reverse/vector) | Sales & CRM | Website code | | | [Cal.com](https://www.runsonwhat.com/reverse/calcom) | Sales & CRM | Subprocessor list | | | [Chili Piper](https://www.runsonwhat.com/reverse/chilipiper) | Sales & CRM | Subprocessor list | | | [Clearbit](https://www.runsonwhat.com/reverse/clearbit) | Sales & CRM | Subprocessor list | | | [LeanData](https://www.runsonwhat.com/reverse/leandata) | Sales & CRM | Subprocessor list | | | [Clay](https://www.runsonwhat.com/reverse/clay) | Sales & CRM | Subprocessor list | | ## 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 | | | [Resend](https://www.runsonwhat.com/reverse/resend) | Email Delivery | Email records | | | [Slack](https://www.runsonwhat.com/reverse/slack) | Collaboration | Subprocessor list | | | [Vanta](https://www.runsonwhat.com/reverse/vanta) | Security & Compliance | Custom domain | 2026-04 | | [Ashby](https://www.runsonwhat.com/reverse/ashby) | People & HR | Website code | | ## FAQ ### What tools does Default use? As of October 2026, runsonwhat has found 47 tools at Default (default.com) in public records. Edge & Hosting: Cloudflare, Amazon Web Services and Amazon Route 53. Application: React, Tailwind CSS and Next.js. Data & Observability: Google Analytics, Google Tag Manager and Hotjar. Go-to-market: Google Ads, LinkedIn Insight Tag and HubSpot. Company Ops: Microsoft 365, Google Workspace and Resend. Last checked October 19, 2026. ### What cloud does Default run on? Default uses Amazon Web Services for hosting and cloud infrastructure, alongside Vercel and Railway, according to runsonwhat (October 2026). runsonwhat found Amazon Web Services through Amazon Web Services on default.com's subprocessor list and code on default.com. Amazon Web Services is used by 145,148 companies runsonwhat tracks. ### What CRM does Default use? Default uses HubSpot for its CRM, alongside Salesforce, Calendly and ZoomInfo, according to runsonwhat (October 2026). runsonwhat found HubSpot through HubSpot on default.com's subprocessor list. HubSpot is used by 92,789 companies runsonwhat tracks. ### What email provider does Default use? Default 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. Microsoft 365 is used by 705,155 companies runsonwhat tracks. ### What analytics tools does Default use? Default uses Google Analytics for analytics, alongside Google Tag Manager, Hotjar and PostHog, according to runsonwhat (October 2026). runsonwhat found Google Analytics through Google Analytics code on default.com. Google Analytics is used by 861,389 companies runsonwhat tracks. ### What is Default's website built with? Default uses Sanity for its website, according to runsonwhat (October 2026). runsonwhat found Sanity through Sanity code on default.com. Sanity is used by 4,774 companies runsonwhat tracks. ### How long has Default used Vercel? Default has used Vercel since at least March 2022, going by the first public certificate of the default.com subdomain that points at Vercel. Other long-running tools at Default include Amazon CloudFront (since September 2024), WorkOS (since March 2025) and Vanta (since April 2026). ### Does Default use Cloudflare? Yes. runsonwhat found Cloudflare at Default through Cloudflare code on default.com. Cloudflare is a CDN & Edge tool used by 696,383 companies runsonwhat tracks. ### Does Default use AI tools? Yes. runsonwhat has found OpenAI and Perplexity at Default; OpenAI, for example, through OpenAI on default.com's subprocessor list. AI services called only from servers leave no public trace, so Default may use more AI tools than these. ### Which companies have a tech stack similar to Default's? The companies with the stacks most like Default's are Luma, Sigma Computing, Expo and Whistic, according to runsonwhat (October 2026). Each shares 18 to 25 tools with Default, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices. ### How does runsonwhat know what Default uses? runsonwhat reads public records only. Of the 47 tools at Default, 22 were found through its own subprocessor list, 14 through code on default.com, 5 through subdomains that point at the vendor, 3 through DNS records, 2 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 default.com about monthly. --- Source: runsonwhat, https://www.runsonwhat.com/company/default.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.