# What does 4chan use?

4chan (4chan.org) shows public evidence of 18 tools, according to runsonwhat (last checked 2026-11-09).

## Edge & Hosting

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

## Go-to-market

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Google Ad Manager](https://www.runsonwhat.com/reverse/google-ad-manager) | Ads & Pixels | Website config |  |
| [Microsoft Xandr](https://www.runsonwhat.com/reverse/xandr) | Ads & Pixels | Website config |  |
| [Criteo](https://www.runsonwhat.com/reverse/criteo) | Ads & Pixels | Website config |  |
| [Magnite](https://www.runsonwhat.com/reverse/magnite) | Ads & Pixels | Website config |  |
| [PubMatic](https://www.runsonwhat.com/reverse/pubmatic) | Ads & Pixels | Website config |  |
| [OpenX](https://www.runsonwhat.com/reverse/openx) | Ads & Pixels | Website config |  |
| [Amazon Publisher Services](https://www.runsonwhat.com/reverse/amazon-publisher-services) | Ads & Pixels | Website config |  |
| [Index Exchange](https://www.runsonwhat.com/reverse/index-exchange) | Ads & Pixels | Website config |  |
| [Media.net](https://www.runsonwhat.com/reverse/media-net) | Ads & Pixels | Website config |  |
| [Sovrn](https://www.runsonwhat.com/reverse/sovrn) | Ads & Pixels | Website config |  |
| [TripleLift](https://www.runsonwhat.com/reverse/triplelift) | Ads & Pixels | Website config |  |
| [Sharethrough](https://www.runsonwhat.com/reverse/sharethrough) | Ads & Pixels | Website config |  |
| [Taboola](https://www.runsonwhat.com/reverse/taboola) | Ads & Pixels | Website config |  |
| [Teads](https://www.runsonwhat.com/reverse/teads) | Ads & Pixels | Website config |  |
| [Outbrain](https://www.runsonwhat.com/reverse/outbrain) | Ads & Pixels | Website config |  |
| [Tumblr](https://www.runsonwhat.com/reverse/tumblr) | Website & CMS | Custom domain |  |

## FAQ

### What tools does 4chan use?

As of November 2026, runsonwhat has found 18 tools at 4chan (4chan.org) in public records. Edge & Hosting: Cloudflare. Go-to-market: Google Ad Manager, Microsoft Xandr and Criteo. Last checked November 9, 2026.

### What is 4chan's website built with?

4chan uses Tumblr for its website, according to runsonwhat (November 2026). runsonwhat found Tumblr through a subdomain that points at Tumblr. Tumblr is used by 408 companies runsonwhat tracks.

### Does 4chan use Cloudflare?

Yes. runsonwhat found Cloudflare at 4chan through DNS records that point at Cloudflare and email records. Cloudflare is a CDN & Edge tool used by 735,420 companies runsonwhat tracks.

### Which companies have a tech stack similar to 4chan's?

The companies with the stacks most like 4chan's are Pt Indo Sistem Global (indosystem), Bitcube, ARGONAUT and DaWanda, according to runsonwhat (November 2026). Each shares 1 to 3 tools with 4chan, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices.

### How does runsonwhat know what 4chan uses?

runsonwhat reads public records only. Of the 18 tools at 4chan, 15 were found through website configuration files, 2 through DNS 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 4chan.org about monthly.


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Source: runsonwhat, https://www.runsonwhat.com/company/4chan.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.