# What does Extension Foundation use?

Extension Foundation (extension.org) shows public evidence of 13 tools, according to runsonwhat (last checked 2026-11-08).

- LinkedIn: https://www.linkedin.com/company/extensionfoundation

## 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 | Website code |  |
| [Amazon Route 53](https://www.runsonwhat.com/reverse/route53) | DNS | DNS records |  |

## Application

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [jQuery](https://www.runsonwhat.com/reverse/jquery) | Frontend | Website code |  |
| [Google Fonts](https://www.runsonwhat.com/reverse/google-fonts) | Media & UI | Website code |  |

## Data & Observability

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Google Analytics](https://www.runsonwhat.com/reverse/ga) | Analytics | Website code |  |

## Go-to-market

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [WordPress](https://www.runsonwhat.com/reverse/wordpress) | Website & CMS | Website code |  |
| [Mailchimp](https://www.runsonwhat.com/reverse/mailchimp) | Marketing | Email records |  |
| [HubSpot](https://www.runsonwhat.com/reverse/hubspot) | Sales & CRM | Website code |  |

## Company Ops

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

## FAQ

### What tools does Extension Foundation use?

As of November 2026, runsonwhat has found 13 tools at Extension Foundation (extension.org) in public records. Edge & Hosting: Cloudflare, Amazon Web Services and Amazon Route 53. Application: jQuery and Google Fonts. Data & Observability: Google Analytics. Go-to-market: WordPress, Mailchimp and HubSpot. Company Ops: Google Workspace, SendGrid and Amazon SES. Last checked November 8, 2026.

### What cloud does Extension Foundation run on?

Extension Foundation uses Amazon Web Services for hosting and cloud infrastructure, according to runsonwhat (November 2026). runsonwhat found Amazon Web Services through Amazon Web Services code on extension.org. Amazon Web Services is used by 147,633 companies runsonwhat tracks.

### What CRM does Extension Foundation use?

Extension Foundation uses HubSpot for its CRM, according to runsonwhat (November 2026). runsonwhat found HubSpot through HubSpot code on extension.org. HubSpot is used by 97,938 companies runsonwhat tracks.

### What email provider does Extension Foundation use?

Extension Foundation uses Google Workspace for email and office software, according to runsonwhat (November 2026). runsonwhat found Google Workspace through email records that authorize Google Workspace and code on extension.org. Google Workspace is used by 421,816 companies runsonwhat tracks.

### What analytics tools does Extension Foundation use?

Extension Foundation uses Google Analytics for analytics, according to runsonwhat (November 2026). runsonwhat found Google Analytics through Google Analytics code on extension.org. Google Analytics is used by 904,064 companies runsonwhat tracks.

### What is Extension Foundation's website built with?

Extension Foundation uses WordPress for its website, according to runsonwhat (November 2026). runsonwhat found WordPress through WordPress code on extension.org. WordPress is used by 606,915 companies runsonwhat tracks.

### Does Extension Foundation use jQuery?

Yes. runsonwhat found jQuery at Extension Foundation through jQuery code on extension.org. jQuery is a Frontend tool used by 927,270 companies runsonwhat tracks.

### How does runsonwhat know what Extension Foundation uses?

runsonwhat reads public records only. Of the 13 tools at Extension Foundation, 7 were found through code on extension.org, 5 through email records and 1 through DNS records. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and extension.org about monthly.


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Source: runsonwhat, https://www.runsonwhat.com/company/extension.org (updated November 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.