# What does Ext / Newswire use?

Ext / Newswire (ext.com) shows public evidence of 13 tools, according to runsonwhat (last checked 2026-10-23).

- Industry: Internet
- Size: 11–50 employees
- Based in: Menlo Park, United States
- LinkedIn: https://www.linkedin.com/company/ext-newswire

## Edge & Hosting

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

## Application

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [YouTube](https://www.runsonwhat.com/reverse/youtube) | Media & UI | Website code |  |
| [React](https://www.runsonwhat.com/reverse/react) | Frontend | Website code |  |
| [Tailwind CSS](https://www.runsonwhat.com/reverse/tailwind) | Frontend | Website code |  |
| [Convex](https://www.runsonwhat.com/reverse/convex) | Backend & Database | Website code |  |

## Go-to-market

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Substack](https://www.runsonwhat.com/reverse/substack) | Website & CMS | Website code |  |

## Company Ops

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Google Workspace](https://www.runsonwhat.com/reverse/google-workspace) | Workspace | Email records, Website code |  |
| [Amazon SES](https://www.runsonwhat.com/reverse/ses) | Email Delivery | Email records |  |
| [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 |  |

## FAQ

### What tools does Ext / Newswire use?

As of October 2026, runsonwhat has found 13 tools at Ext / Newswire (ext.com) in public records. Edge & Hosting: Cloudflare. Application: YouTube, React and Tailwind CSS. Go-to-market: Substack. Company Ops: Google Workspace, Amazon SES and Let's Encrypt. Last checked October 23, 2026.

### What email provider does Ext / Newswire use?

Ext / Newswire uses Google Workspace for email and office software, according to runsonwhat (October 2026). runsonwhat found Google Workspace through email records that authorize Google Workspace and code on ext.com. Google Workspace is used by 402,286 companies runsonwhat tracks.

### What is Ext / Newswire's website built with?

Ext / Newswire uses Substack for its website, according to runsonwhat (October 2026). runsonwhat found Substack through Substack code on ext.com. Substack is used by 395 companies runsonwhat tracks.

### Does Ext / Newswire use Cloudflare?

Yes. runsonwhat found Cloudflare at Ext / Newswire through DNS records that point at Cloudflare and code on ext.com. Cloudflare is a CDN & Edge tool used by 702,323 companies runsonwhat tracks.

### Which companies have a tech stack similar to Ext / Newswire's?

The companies with the stacks most like Ext / Newswire's are Edenn, MemberUp, Tars and Publimedios México, according to runsonwhat (October 2026). Each shares 2 to 10 tools with Ext / Newswire, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices.

### How does runsonwhat know what Ext / Newswire uses?

runsonwhat reads public records only. Of the 13 tools at Ext / Newswire, 6 were found through DNS records, 5 through code on ext.com and 2 through email records. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and ext.com about monthly.


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