# What does cmux use?

cmux (cmux.com) shows public evidence of 13 tools, according to runsonwhat (last checked 2026-10-20).

- Industry: B2B
- Size: 1–10 employees
- Based in: San Francisco, United States

## Edge & Hosting

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Cloudflare](https://www.runsonwhat.com/reverse/cloudflare) | CDN & Edge | DNS records, Email records, Website code |  |
| [Vercel](https://www.runsonwhat.com/reverse/vercel) | Hosting & Cloud | DNS verification records, DNS records, Custom domain, 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 |  |
| [Stripe](https://www.runsonwhat.com/reverse/stripe) | Payments & Billing | Website code |  |

## Go-to-market

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Discord](https://www.runsonwhat.com/reverse/discord) | Support & Docs | Website code |  |

## Company Ops

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Google Workspace](https://www.runsonwhat.com/reverse/google-workspace) | Workspace | Email records, Website code |  |
| [Apple Business](https://www.runsonwhat.com/reverse/apple) | Workspace | DNS verification records |  |
| [Cloudflare Turnstile](https://www.runsonwhat.com/reverse/turnstile) | Security & Compliance | Website code |  |
| [Resend](https://www.runsonwhat.com/reverse/resend) | Email Delivery | Email records |  |

## Recent changes at cmux

- 2026-10-09: started using [Apple Business](https://www.runsonwhat.com/reverse/apple)

## FAQ

### What tools does cmux use?

As of October 2026, runsonwhat has found 13 tools at cmux (cmux.com) in public records. Edge & Hosting: Cloudflare and Vercel. Application: React, Tailwind CSS and Next.js. Go-to-market: Discord. Company Ops: Google Workspace, Apple Business and Cloudflare Turnstile. Last checked October 20, 2026.

### What cloud does cmux run on?

cmux uses Vercel for hosting and cloud infrastructure, according to runsonwhat (October 2026). runsonwhat found Vercel through a DNS verification record for Vercel and DNS records. Vercel is used by 48,106 companies runsonwhat tracks.

### What email provider does cmux use?

cmux 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 cmux.com. Google Workspace is used by 402,379 companies runsonwhat tracks.

### What does cmux use for customer support?

cmux uses Discord for customer support and documentation, according to runsonwhat (October 2026). runsonwhat found Discord through Discord code on cmux.com. Discord is used by 5,746 companies runsonwhat tracks.

### What payment provider does cmux use?

cmux uses Stripe for payments and billing, according to runsonwhat (October 2026). runsonwhat found Stripe through Stripe code on cmux.com. Stripe is used by 28,085 companies runsonwhat tracks.

### Does cmux use Cloudflare?

Yes. runsonwhat found Cloudflare at cmux through DNS records that point at Cloudflare and email records. Cloudflare is a CDN & Edge tool used by 702,765 companies runsonwhat tracks.

### Has cmux changed tools recently?

Yes. On runsonwhat's rechecks, cmux started using Apple Business (latest on October 9, 2026). A change counts only between two checks of cmux.com done the same way.

### How does runsonwhat know what cmux uses?

runsonwhat reads public records only. Of the 13 tools at cmux, 6 were found through code on cmux.com, 4 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 cmux.com about monthly.


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Source: runsonwhat, https://www.runsonwhat.com/company/cmux.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.