# What does Cuckoo use?

Cuckoo (cuckoo.so) shows public evidence of 19 tools, according to runsonwhat (last checked 2026-10-20).

- Industry: B2B
- Size: 1–10 employees
- Based in: Seoul, South Korea
- Founded: 2024
- LinkedIn: https://www.linkedin.com/company/cuckoohq

## 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 |
|---|---|---|---|
| [Google Fonts](https://www.runsonwhat.com/reverse/google-fonts) | Media & UI | Website code |  |
| [React](https://www.runsonwhat.com/reverse/react) | Frontend | Website code |  |
| [Adobe Fonts](https://www.runsonwhat.com/reverse/adobe-fonts) | Media & UI | Website code |  |
| [Tailwind CSS](https://www.runsonwhat.com/reverse/tailwind) | Frontend | Website code |  |
| [Next.js](https://www.runsonwhat.com/reverse/nextjs) | Frontend | Website code |  |
| [Clerk](https://www.runsonwhat.com/reverse/clerk) | Auth & Identity | Custom domain |  |

## Data & Observability

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [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 |
|---|---|---|---|
| [Mintlify](https://www.runsonwhat.com/reverse/mintlify) | Support & Docs | Custom domain |  |

## 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 |  |
| [Zoom](https://www.runsonwhat.com/reverse/zoom) | Collaboration | DNS verification records |  |
| [Rippling](https://www.runsonwhat.com/reverse/rippling) | People & HR | DNS verification records |  |
| [Vanta](https://www.runsonwhat.com/reverse/vanta) | Security & Compliance | Custom domain |  |

## FAQ

### What tools does Cuckoo use?

As of October 2026, runsonwhat has found 19 tools at Cuckoo (cuckoo.so) in public records. Edge & Hosting: Cloudflare and Vercel. Application: Google Fonts, React and Adobe Fonts. Data & Observability: Vercel Analytics and Better Stack. Go-to-market: Mintlify. Company Ops: Microsoft 365, Google Workspace and Resend. Last checked October 20, 2026.

### What cloud does Cuckoo run on?

Cuckoo 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 48,885 companies runsonwhat tracks.

### What email provider does Cuckoo use?

Cuckoo 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 715,173 companies runsonwhat tracks.

### What does Cuckoo use for customer support?

Cuckoo uses Mintlify for customer support and documentation, according to runsonwhat (October 2026). runsonwhat found Mintlify through a subdomain that points at Mintlify. Mintlify is used by 1,136 companies runsonwhat tracks.

### What analytics tools does Cuckoo use?

Cuckoo uses Vercel Analytics for analytics, according to runsonwhat (October 2026). runsonwhat found Vercel Analytics through Vercel Analytics code on cuckoo.so. Vercel Analytics is used by 7,763 companies runsonwhat tracks.

### What does Cuckoo use for hiring and HR?

Cuckoo uses Rippling for hiring and HR, according to runsonwhat (October 2026). runsonwhat found Rippling through a DNS verification record for Rippling. Rippling is used by 3,236 companies runsonwhat tracks.

### Does Cuckoo use Google Fonts?

Yes. runsonwhat found Google Fonts at Cuckoo through Google Fonts code on cuckoo.so. Google Fonts is a Media & UI tool used by 815,376 companies runsonwhat tracks.

### Which companies have a tech stack similar to Cuckoo's?

The companies with the stacks most like Cuckoo's are Outlit Labs, Deeptrace, Revion and Flowglad, according to runsonwhat (October 2026). Each shares 8 to 11 tools with Cuckoo, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices.

### How does runsonwhat know what Cuckoo uses?

runsonwhat reads public records only. Of the 19 tools at Cuckoo, 6 were found through code on cuckoo.so, 5 through DNS records, 5 through subdomains that point at the vendor, 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 cuckoo.so about monthly.


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Source: runsonwhat, https://www.runsonwhat.com/company/cuckoo.so (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.