# What does CORSPROXY use?

CORSPROXY (corsproxy.io) shows public evidence of 12 tools, according to runsonwhat (last checked 2026-10-20).

## Edge & Hosting

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Cloudflare](https://www.runsonwhat.com/reverse/cloudflare) | CDN & Edge | DNS records, Website code |  |

## Application

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Tailwind CSS](https://www.runsonwhat.com/reverse/tailwind) | Frontend | Website code |  |
| [Astro](https://www.runsonwhat.com/reverse/astro) | Frontend | Website code |  |
| [Clerk](https://www.runsonwhat.com/reverse/clerk) | Auth & Identity | Custom domain | 2023-06 |

## Data & Observability

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Better Stack](https://www.runsonwhat.com/reverse/betterstack) | Monitoring | Custom domain |  |

## Go-to-market

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Zoho](https://www.runsonwhat.com/reverse/zoho) | Sales & CRM | Email records |  |

## Company Ops

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Let's Encrypt](https://www.runsonwhat.com/reverse/letsencrypt) | Security & Compliance | DNS records |  |
| [Sectigo](https://www.runsonwhat.com/reverse/sectigo) | Security & Compliance | DNS records |  |
| [DigiCert](https://www.runsonwhat.com/reverse/digicert) | Security & Compliance | DNS records |  |
| [Google Trust Services](https://www.runsonwhat.com/reverse/google-trust) | Security & Compliance | DNS records |  |
| [Resend](https://www.runsonwhat.com/reverse/resend) | Email Delivery | Email records |  |

## FAQ

### What tools does CORSPROXY use?

As of October 2026, runsonwhat has found 12 tools at CORSPROXY (corsproxy.io) in public records. Edge & Hosting: Cloudflare. Application: Tailwind CSS, Astro and Clerk. Data & Observability: Better Stack. Go-to-market: Zoho. Company Ops: Let's Encrypt, Sectigo and DigiCert. Last checked October 20, 2026.

### What CRM does CORSPROXY use?

CORSPROXY uses Zoho for its CRM, according to runsonwhat (October 2026). runsonwhat found Zoho through email records that authorize Zoho. Zoho is used by 62,495 companies runsonwhat tracks.

### What does CORSPROXY use for login and identity?

CORSPROXY uses Clerk for sign-in and identity, according to runsonwhat (October 2026). runsonwhat found Clerk through a subdomain that points at Clerk, and CORSPROXY has used it since at least June 2023. Clerk is used by 1,274 companies runsonwhat tracks.

### What monitoring tools does CORSPROXY use?

CORSPROXY uses Better Stack for monitoring, according to runsonwhat (October 2026). runsonwhat found Better Stack through a subdomain that points at Better Stack. Better Stack is used by 2,651 companies runsonwhat tracks.

### How long has CORSPROXY used Clerk?

CORSPROXY has used Clerk since at least June 2023, going by the first public certificate of the corsproxy.io subdomain that points at Clerk.

### Does CORSPROXY use Cloudflare?

Yes. runsonwhat found Cloudflare at CORSPROXY through DNS records that point at Cloudflare and code on corsproxy.io. Cloudflare is a CDN & Edge tool used by 703,039 companies runsonwhat tracks.

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

The companies with the stacks most like CORSPROXY's are Comfy Deploy, Orange Walrus, Themes for App and Mochi, according to runsonwhat (October 2026). Each shares 1 to 8 tools with CORSPROXY, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices.

### How does runsonwhat know what CORSPROXY uses?

runsonwhat reads public records only. Of the 12 tools at CORSPROXY, 6 were found through DNS records, 2 through code on corsproxy.io, 2 through email 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 corsproxy.io about monthly.


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