# What does Simon Willison’s Weblog use?

Simon Willison’s Weblog (simonwillison.net) shows public evidence of 7 tools, according to runsonwhat (last checked 2026-10-07).

## Edge & Hosting

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Cloudflare](https://www.runsonwhat.com/reverse/cloudflare) | CDN & Edge | DNS records, Website code |  |
| [Amazon Web Services](https://www.runsonwhat.com/reverse/aws) | Hosting & Cloud | Custom domain |  |

## Application

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [OpenAI](https://www.runsonwhat.com/reverse/openai) | AI | DNS verification records |  |
| [imgix](https://www.runsonwhat.com/reverse/imgix) | Media & UI | Website code |  |

## Data & Observability

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

## Company Ops

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

## FAQ

### What tools does Simon Willison’s Weblog use?

As of October 2026, runsonwhat has found 7 tools at Simon Willison’s Weblog (simonwillison.net) in public records. Edge & Hosting: Cloudflare and Amazon Web Services. Application: OpenAI and imgix. Data & Observability: Plausible. Company Ops: Google Workspace. Last checked October 7, 2026.

### What cloud does Simon Willison’s Weblog run on?

Simon Willison’s Weblog uses Amazon Web Services for hosting and cloud infrastructure, according to runsonwhat (October 2026). runsonwhat found Amazon Web Services through a subdomain that points at Amazon Web Services. Amazon Web Services is used by 144,487 companies runsonwhat tracks.

### What email provider does Simon Willison’s Weblog use?

Simon Willison’s Weblog 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 simonwillison.net. Google Workspace is used by 394,801 companies runsonwhat tracks.

### What analytics tools does Simon Willison’s Weblog use?

Simon Willison’s Weblog uses Plausible for analytics, according to runsonwhat (October 2026). runsonwhat found Plausible through Plausible code on simonwillison.net. Plausible is used by 6,844 companies runsonwhat tracks.

### Does Simon Willison’s Weblog use Cloudflare?

Yes. runsonwhat found Cloudflare at Simon Willison’s Weblog through DNS records that point at Cloudflare and code on simonwillison.net. Cloudflare is a CDN & Edge tool used by 688,916 companies runsonwhat tracks.

### Does Simon Willison’s Weblog use AI tools?

Yes. runsonwhat has found OpenAI at Simon Willison’s Weblog; OpenAI, for example, through a DNS verification record for OpenAI. AI services called only from servers leave no public trace, so Simon Willison’s Weblog may use more AI tools than these.

### Which companies have a tech stack similar to Simon Willison’s Weblog's?

The companies with the stacks most like Simon Willison’s Weblog's are Itway, TACTOTEK, General Catalyst and TEKMAR SLOVENSKO, s.r.o., according to runsonwhat (October 2026). Each shares 1 to 4 tools with Simon Willison’s Weblog, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices.

### How does runsonwhat know what Simon Willison’s Weblog uses?

runsonwhat reads public records only. Of the 7 tools at Simon Willison’s Weblog, 3 were found through DNS records, 2 through code on simonwillison.net, 1 through email records and 1 through subdomains that point at the vendor. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and simonwillison.net about monthly.


---

Source: runsonwhat, https://www.runsonwhat.com/company/simonwillison.net (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.