# What does AtCoder use?

AtCoder (atcoder.jp) shows public evidence of 15 tools, according to runsonwhat (last checked 2026-10-20).

- Size: 1–10 employees
- Based in: Tokyo, Japan
- LinkedIn: https://www.linkedin.com/company/atcoder

## Edge & Hosting

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

## 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 |  |
| [Stripe](https://www.runsonwhat.com/reverse/stripe) | Payments & Billing | DNS verification records, Website code |  |
| [AddToAny](https://www.runsonwhat.com/reverse/addtoany) | 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 |
|---|---|---|---|
| [Pardot](https://www.runsonwhat.com/reverse/pardot) | Marketing | DNS verification records, Email records, Website code |  |

## Company Ops

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Microsoft 365](https://www.runsonwhat.com/reverse/microsoft-365) | Workspace | DNS verification records |  |
| [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, Website code |  |
| [1Password](https://www.runsonwhat.com/reverse/1password) | Security & Compliance | DNS verification records |  |

## FAQ

### What tools does AtCoder use?

As of October 2026, runsonwhat has found 15 tools at AtCoder (atcoder.jp) in public records. Edge & Hosting: Cloudflare, Amazon Web Services and Amazon Route 53. Application: jQuery, Google Fonts and Stripe. Data & Observability: Google Analytics. Go-to-market: Pardot. Company Ops: Microsoft 365, Google Workspace and Amazon SES. Last checked October 20, 2026.

### What cloud does AtCoder run on?

AtCoder uses Amazon Web Services for hosting and cloud infrastructure, according to runsonwhat (October 2026). runsonwhat found Amazon Web Services through Amazon Web Services code on atcoder.jp. Amazon Web Services is used by 145,885 companies runsonwhat tracks.

### What email provider does AtCoder use?

AtCoder uses Microsoft 365 for email and office software, alongside Google Workspace, according to runsonwhat (October 2026). runsonwhat found Microsoft 365 through a DNS verification record for Microsoft 365. Microsoft 365 is used by 713,664 companies runsonwhat tracks.

### What payment provider does AtCoder use?

AtCoder uses Stripe for payments and billing, according to runsonwhat (October 2026). runsonwhat found Stripe through a DNS verification record for Stripe and code on atcoder.jp. Stripe is used by 28,808 companies runsonwhat tracks.

### What analytics tools does AtCoder use?

AtCoder uses Google Analytics for analytics, according to runsonwhat (October 2026). runsonwhat found Google Analytics through Google Analytics code on atcoder.jp. Google Analytics is used by 886,054 companies runsonwhat tracks.

### What marketing software does AtCoder use?

AtCoder uses Pardot for marketing, according to runsonwhat (October 2026). runsonwhat found Pardot through a DNS verification record for Pardot and email records. Pardot is used by 20,398 companies runsonwhat tracks.

### Does AtCoder use jQuery?

Yes. runsonwhat found jQuery at AtCoder through jQuery code on atcoder.jp. jQuery is a Frontend tool used by 919,229 companies runsonwhat tracks.

### How does runsonwhat know what AtCoder uses?

runsonwhat reads public records only. Of the 15 tools at AtCoder, 7 were found through DNS records, 5 through code on atcoder.jp, 2 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 atcoder.jp about monthly.


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Source: runsonwhat, https://www.runsonwhat.com/company/atcoder.jp (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.